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Motion Accessories 
The Motion Subsystem comprises all the components in the VEX Robotics Design System which make a robot move. These components are critical to every robot. The Motion Subsystem is tightly integrated with the components of the Structure Subsystem in almost all robot designs. In the VEX Robotics Design System the motion components are all easily integrated together. This makes it simple to create very complex systems using the basic motion building blocks.
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2-Wire Motor 393

The 2-Wire Motor 393 is the primary actuator used in the VEX Robotics Design System. Build rotational mechanisms, drive bases, rotational joints, conveyor belts - anything that spins can be built using the 2-wire Motor 393.

  • Strong, steel internal gears.
  • Can be configured into a "high speed" version.

The 2-Wire Motor 393 does not have an internal motor controller.

The motor connects directly to 2-Wire Motor Ports (Ports 1 & 10 on the Cortex Microcontroller). For 3-Wire Motor Ports (Ports 2-9 on the Cortex), a Motor Controller 29 must be used in between the Microcontroller and the motor.


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Drive Shaft 12" (4-pack)

The square shaft has rounded corners which allow it to spin easily in a round hole, while locking to a square hole.

  • Three length: 2", 3", and 12".
  • Use the 12" to make your own custom length shafts.
  • Works with motors, wheels, gears, and bearings.

Our Price: $8.96
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Bearing Flat, Delrin (10-pack)

The Bearing Flat mounts directly on a piece of VEX structure and supports a shaft which runs perpendicular and directly through the structure.

  • Low friction allows shafts to turn smoothly.
  • Mount with Screws & Nuts or Pop Rivets

Our Price: $4.99
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Shaft Collar (16-pack)

Collars lock to drive shafts, keeping wheels and gears from sliding along the shaft. Collars fit around Drive Shafts and can be fastened in place using a setscrew.

  • Designed specifically for the VEX Drive Shaft.
  • Set screw uses the same Allen Wrench as the 6-32 Motor Screws.

Our Price: $7.99
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3-Wire Servo

Servo motors are a type of motor that can be directed to turn to face a speci�c direction, rather than just spin forward or backward.

  • Expand functionality
  • Add pan and tilt to a camera
  • 100 degrees of rotation
  • Do exact positioning

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Tank Tread Upgrade Kit

These upgrade links should be useful to designers wishing to create more advanced mechanisms utilizing the tank tread.

  • Different Tread-Links Increase Functionality.
  • Get High-Traction on Smooth Surfaces.
  • Compatible with Tank Tread Kit, High Strength Chain & Sprockets.

Our Price: $24.99
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4" Omni-Directional Wheel (2-pack)

Omni-Directional wheels roll forward like normal wheels, but slide sideways with almost no friction (no skidding during turns). Use these wheels to make your robot turn smoothly or build a holonomic drivetrain. These wheels are the same size as the VEX 4" dia. Wheels.

  • 4" Omni Wheels roll sideways with very little friction.
  • Minimize skidding during turns.
  • Build a holonomic drive.

Our Price: $24.99
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Clamping Shaft Collar (10-pack)

Shaft collars for VEX EDR Drive Shafts. This clamping-style collar uses standard VEX EDR button head screws and nuts to maintain a tight lock without scratching or damaging the shaft.

  • Designed specifically for VEX EDR Drive Shafts
  • Standard VEX EDR screws use a 3/32" allen key
  • Clamping collar is easily adjustable without damaging shaft

Our Price: $4.99
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Shaft Coupler (5-pack)

Shaft couplers are the same length as old VEX clutches, allowing 2-Wire Motors to be used in places that previously had a clutch without changing shaft length.

  • Makes replacing 3-Wire Motors quick and simple.
  • Placement between motor and drive shaft makes changing shafts easier.


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High Strength Shaft 4" Long (4-pack)

Larger 1/4" shafts are tougher, stronger, and ready for even the most stressful robotic applications. These thicker shafts are more resistant to both twisting and bending fatigue, meaning that you should have no fear of designing high-torque gearboxes or high-impact drivetrains.

  • Works with all VEX High Strength Gears
  • Works with the 3.25" Omni Wheel and 3.25" Traction Wheel
  • Four lengths: 2", 3", 4", 12"
  • Use the 12" to make your own custom length shafts

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High Strength Clamping Shaft Collar (10-pack)

Shaft collars for High Strength Shafts. This clamping-style collar uses standard VEX EDR button head screws and nuts to maintain a tight lock without scratching or damaging the shaft.

  • Designed specifically for VEX High Strength Shafts
  • Standard VEX EDR screws use a 3/32" allen key
  • Clamping collar is easily adjustable without damaging shaft

Our Price: $9.99
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High Strength Shaft Bearing (10-pack)

The High Strength Shaft Bearing is a larger version of the Bearing Flat that is designed for the 0.25" High Strength Shafts.

  • Mounts directly onto VEX EDR structure
  • Low friction allows shafts to turn smoothly
  • Mount with Screws & Nuts or Pop Rivets

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Rack Gear v2 (16-pack)
Now with a new design! The Rack Gear v2 is wider and thereby more compatible with VEX High Strength gears. v2 has also eliminated the brass inserts from the original design, and replaced them with molded-in nut pockets. Now you can use 8-32 screws!

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Metal 12-Tooth Pinion (12-pack)

These metal 12-tooth spur gears are great for applications under high shock load or requiring high strength.

  • Double-thick face.
  • All metal gear for high strength.
  • Mates with standard VEX gears.

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Additional Chain

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Linear Motion Kit

The Linear Motion Kit provides a method for VEX builders to create linear mechanisms. Utilize the low friction slide rails for your own mechanisms or combine them with included Rack Brackets and VEX Rack Gears (not included) to build direct driven linear actuators. Each of the plastic slide trucks has self-tapping holes for VEX 8-32 screws which allows for easy assembly.

  • The rails have holes on 0.500" increments.
  • Two rail lengths included - 12" and 17.5"
  • Use with VEX 8-32 hardware (not included)

Our Price: $24.99
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Rack Gearbox Bracket (2-pack)

Uses the pinion gear to rotate the rack gear which will in turn slide linearly using the VEX Linear Slide Pack.

  • Create linear motion.
  • Gears and Motor sold separately.
  • Sold in a pack of two brackets.

Our Price: $9.99
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Drive Shaft 2" & 3" Pack

The square shaft has rounded corners which allow it to spin easily in a round hole, while locking to a square hole.

  • Three length: 2", 3", and 12".
  • Use the 12" to make your own custom length shafts.
  • Works with motors, wheels, gears, and bearings.

Our Price: $5.49
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2.75" Omni Directional Wheel - Double Roller (2-pack)

Omni-Directional wheels roll forward like normal wheels, but slide sideways with almost no friction (no skidding during turns). Use these wheels to make your robot turn smoothly or build a holonomic drivetrain.

  • 2.75" diameter
  • 14 rollers per wheel

Our Price: $19.99
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4" Wheel (4-pack)

A pack of (4) of the VEX 4" diameter wheels. These wheels include a tire which works well on any surface.

  • High Traction square tread.
  • Removing the tread leaves a ribbed plastic wheel.

Our Price: $19.99
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Gear Kit

This kit contains four sizes of VEX Spur Gears (12-, 36-, 60-, and 84-tooth gears). The 60- and 84-tooth gears have extra mounting holes for attaching metal bars or parts to these gears when using them as part of a turntable system or similar design.

  • Create robot transmissions, gearboxes, and gear reductions.
  • Vary the speed or torque of robot motion systems.
  • Increase design possibilities for your robots.

Our Price: $12.99
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Bevel Gearbox Bracket (2-pack)

Use additional standard VEX Motion Products (not included) to utilize this bracket with VEX Bevel Gears. There are 2 VEX Bevel Gear Brackets included in this kit.

  • Designed for the VEX Bevel Gears.
  • Metal only. Gears and bearings not included.
  • Sold in a pack of 2 brackets.

Our Price: $9.99
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High Strength 84-Tooth Gear

Build mechanisms capable of achieving higher torque or speed than ever before - lift heavier loads and survive bigger impacts with the additional gear ratio options provided by the largest high strength gear available.

  • Works with the VEX High Strength Gear Kit or any VEX spur gear
  • Double-thick face width and ribbing provide added strength
  • Metal Square Hole Inserts prevent axles from "stripping"
  • Build gearboxes that resist high shock-loads
  • Bolt gears together for added strength
In stock soon. Order now to get in line. First come first served.

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High Strength Shaft 12" Long (4-pack)

Larger 1/4" shafts are tougher, stronger, and ready for even the most stressful robotic applications. These thicker shafts are more resistant to both twisting and bending fatigue, meaning that you should have no fear of designing high-torque gearboxes or high-impact drivetrains.

  • Works with all VEX High Strength Gears
  • Works with the 3.25" Omni Wheel and 3.25" Traction Wheel
  • Four lengths: 2", 3", 4", 12"
  • Use the 12" to make your own custom length shafts

Our Price: $14.99
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High Strength Sprocket 6 Tooth (8-Pack)

These reinforced sprockets can transmit higher loads over long distances. Use this kit to withstand higher stresses and lift heavier loads. Useful for any application where regular chain just won't cut it.

  • High Strength Design - lift up to 50 lbs
  • (5) size options available individually
  • Use with High Strength Chain or Tank Tread

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2.75" Wheel (4-pack)

A pack of (4) of the VEX 2.75" diameter Wheels. These wheels include a smooth grippy tire which has high traction on smooth surfaces.

  • High Traction rounded tread.
  • Removing the tread make a low-friction wheel.

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393 Motor Turbo Gear Set (4-pack)

Use the Turbo Gear Set to push your motors to the fastest speeds ever seen in VEX robotics. This gear pack replaces the gears inside a 2-Wire Motor 393 for high-RPM, low-torque applications.

  • Only for 2-Wire Motor 393
  • 240 RPM output speed is 140% faster than standard gearing
  • Use with external gearing or large wheels for even more speed

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High Strength Sprocket 30 Tooth (4-Pack)

These reinforced sprockets can transmit higher loads over long distances. Use this kit to withstand higher stresses and lift heavier loads. Useful for any application where regular chain just won't cut it.

  • High Strength Design - lift up to 50 lbs
  • (5) size options available individually
  • Use with High Strength Chain or Tank Tread

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6" Wheel Leg (4-pack)

Create robots capable of climbing over almost any obstacle. The Wheel Legs are great for constructing All-Terrain or Off-Road robots. These legs consist of (4) spoke "legs" protruding from a central hub with mounting holes for attaching mechanisms. They also have high traction rubber feet and an offset hub for "overlapping" wheels.

  • Traverse rough surfaces.
  • Build Off-Road Robots.
  • Mounting Holes for attaching Mechanisms.
  • Offset Hub for "overlapping" wheels.

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4" High Traction Tire (4-pack)

The VEX 4" High Traction Tires are replacements for the "all-purpose" treads found on VEX 4" diameter wheels. These tires are designed to provide high traction on smooth surfaces.

*Note: This kit includes tires only, wheel rims not included. Simply remove the current 4" tires from their plastic rims and replace them with these high traction ones.


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High Strength Sprocket & Chain Kit

These reinforced sprockets and chain can transmit higher loads over long distances. Use this kit to withstand higher stresses and lift heavier loads. For any application where regular chain just won't cut it.

  • High Strength Design - up to 50 lbs.
  • 12 Sprockets in 5 Sizes.
  • 54" of Chain Links.

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Tank Tread Kit

This kit contains over five feet of tank tread designed specifically for the VEX Robotics Design System. Use this tank tread to build robot tracks which can overcome tough terrain, or build a conveyor belt for scooping up objects.

  • Climb over obstacles.
  • Traverse tough terrain.
  • Drive through sandy or soft spongy surfaces.
  • Can be used for a robot conveyor belt.
  • Every section is a master link, create treads of any length.

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Turntable Bearing Kit

The VEX Turntable Bearing Kit provides two options for low friction, high load rotational joints. These are especially well suited for rotational joints with lots of side load - this kit makes it easy to build a turret on your robot! Integrated gearing makes each turntable simple to actuate while other features allow for a variety of design uses.

  • (1) 2.6" diameter Turntable Bearing
  • (1) 4.25" diameter Turntable Bearing
  • Mounting Hardware Sold Separately

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Advanced Mechanics and Motion Kit

This kit contains a variety of mechanisms to help a robot builder learn about the mechanics of motion. Use them to see examples of worm gears, lead screws, universal joints, bevel gear reductions and rotary cams.

  • Create complex robot mechanisms.
  • Learn advanced mechanics principles.

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Winch and Pulley Kit

This kit provides the ability to implement a winch and pulley system and create block and tackle mechanisms to utilize mechanical advantage.

  • Lift, lower, hang, drag and more.
  • Configurable for many applications.
  • Ratchet and Pawl can be engaged to prevent back driving.

Our Price: $14.99
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Swerve Drive Kit

The swerve drive kit lets you build a unique drive and steering configuration for your VEX robot. Get unmatched maneuverability and increased versatility through drive pods which can be configured with up to 360 degrees of rotation.

  • Improve robot maneuverability.
  • Unique steering and drive arrangement.
  • Steel brackets included.

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Worm Gearbox Bracket (2-pack)

This Bracket is designed with the VEX Worm Gear. This is the simplest way to mount and utilize the worm gears.

  • Designed for the VEX Worm Gears.
  • Metal only. Gears not included.
  • Sold in a pack of 2 brackets.

Our Price: $12.99
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High Strength Shaft 2" Long (4-pack)

Larger 1/4" shafts are tougher, stronger, and ready for even the most stressful robotic applications. These thicker shafts are more resistant to both twisting and bending fatigue, meaning that you should have no fear of designing high-torque gearboxes or high-impact drivetrains.

  • Works with all VEX High Strength Gears
  • Works with the 3.25" Omni Wheel and 3.25" Traction Wheel
  • Four lengths: 2", 3", 4", 12"
  • Use the 12" to make your own custom length shafts

Our Price: $4.99
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3.25" Traction Wheel (4-pack)

A pack of (4) of the VEX 3.25" diameter wheels. These wheels include a tire designed for optimal grip on soft surfaces like the foam tiles used in the VEX Robotics Competition. Removable wheel inserts allow for additional versatility - use these wheels with either standard Drive Shafts or High Strength Shafts, in either a driven or free spinning application.

  • High traction tire profile
  • Versatile wheel inserts for a variety of applications
  • Contains direct mounting holes for gears or sprockets

Note: 3.25" rubber tires are molded directly onto the plastic hubs. They are not removable.


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3.25" Omni-Directional Wheel (4-pack)

Reinvent the wheel!

Omni-Directional wheels roll forward like normal wheels, but slide sideways with almost no friction (no skidding during turns). These wheels are the same size as the VEX 3.25" Traction Wheels. Removable wheel inserts allow for additional versatility - use these wheels with either standard Drive Shafts or High Strength Shafts, in either a driven or free spinning application.

  • 3.25" Omni Wheels roll sideways with very little friction
  • Versatile wheel inserts for a variety of applications
  • Contains direct mounting holes for gears or sprockets

Our Price: $39.99
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5" Wheel (4-pack)

A pack of (4) of the VEX 5" diameter Wheels. These wheels include a knobby tire which works great on rough terrain or loose surfaces.

  • High Traction rough knobby tread.
  • Removing the tread leaves a ribbed plastic wheel.

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Mecanum Wheel 4" (4-pack)

Mecanum wheels allow savvy robot designers to create drivetrains capable of moving in any direction using a standard chassis shape. Simply power each wheel with a different motor and by changing the directions the wheels spin get your robot to move in different directions!

  • Allows robots to move in any direction.
  • Split Roller style design.
  • 14 rollers per wheel.

Our Price: $59.99
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Pillow Block Bearing & Lock Bar Pack

Bearing Blocks mount on a piece of structure and supports a shaft which is offset either above, below, or to the side of the structure.

Lock Bars allow any VEX component to be "locked" to a shaft so that it will spin with the shaft.

Note: These items are not sold separately.


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Claw Kit

With the VEX Robotics Claw Kit, your robot can easily grab and manipulate various objects. Motor required and not included.

  • Strong enough to hold a 12 oz soda can.
  • Dexterous enough to grab a feather.
  • Comes partially assembled.
  • Compatible with all VEX Mechanical Parts.

Our Price: $19.99
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Universal Joint (5-pack)

Universal joints provide a mechanical link between two intersecting, non-parallel shafts. Each side of the VEX U-Joint includes a socket for a VEX square shaft, and a set-screw to hold the shaft in place.

  • Create complex robot mechanisms
  • Transfer power "around corners" and at angles

Our Price: $9.99
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High Strength 36-Tooth Gear (8-pack)

Build mechanisms capable of achieving higher torque or speed than ever before - lift heavier loads and survive bigger impacts with the additional gear ratio options provided by the largest high strength gear available.

  • Works with the VEX High Strength Gear Kit or any VEX spur gear
  • Double-thick face width and ribbing provide added strength
  • Metal Square Hole Inserts prevent axles from "stripping"
  • Build gearboxes that resist high shock-loads
  • Bolt gears together for added strength

Our Price: $12.99
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Advanced Gear Kit

This kit provides several options for advanced motion. These parts allow advanced mechanical VEX designers to create new ingenious mechanisms.

  • Create Linear Motion with the Rack Gears.
  • Transfer Motion 90 degrees with Bevel Gears.
  • Add a Differential to your Drivetrain.
  • Get a high-reduction with the Worm Gears.
  • Increase design possibilities for your robots.

Our Price: $19.99
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High Strength Gear Kit

Build mechanisms capable of withstanding higher stresses than ever before. Lift heavier loads, and survive bigger impacts with the High Strength Gear Kit.

  • High strength gears mate with all VEX spur gears.
  • Double-thick face width provides added tooth strength.
  • Metal Square Hole Inserts prevent axles from "stripping".
  • Use metal pinions for high strength where it counts.
  • Use the round-hole inserts to build free spinning idler gears.
  • Build gearboxes that resist high shock-loads.
  • Bolt Gears together for added strength.

Our Price: $29.99
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Rack Gear (16-pack)

Rack gears can be used to turn rotary motion into linear motion.

  • Use any VEX spur gear as a pinion to drive these rack gears.
  • Stack multiple rack gears back to back for longer motions.
  • Combine these with a VEX linear slide and Rack Gear Bracket (sold separately) to create a simple linear actuator.
  • Each Rack Gear includes (3) 6-32 threaded inserts on their back face. Mount these similar to VEX motors or servos with 6-32 screws.

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High Strength Shaft 3" Long (4-pack)

Larger 1/4" shafts are tougher, stronger, and ready for even the most stressful robotic applications. These thicker shafts are more resistant to both twisting and bending fatigue, meaning that you should have no fear of designing high-torque gearboxes or high-impact drivetrains.

  • Works with all VEX High Strength Gears
  • Works with the 3.25" Omni Wheel and 3.25" Traction Wheel
  • Four lengths: 2", 3", 4", 12"
  • Use the 12" to make your own custom length shafts

Our Price: $4.99
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Linear Motion Additional Truck Kit
Spare plastic trucks from the VEX EDR Linear Motion Kit. Includes (8) Inner Slide Trucks and (8) Outer Slide Trucks.

Our Price: $9.99
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Sprocket & Chain Kit

The six different sprocket sizes allow for a variety of ratios. Great for any application where you need to transfer power across long distances.

  • Transfers power effectively over long distances.
  • Designed to carry moderate loads.
  • Every section of chain is a master link.
  • (14) Sprockets in (5) Sizes.

Our Price: $29.99
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Solenoid Driver Cable (2-pack)
This Pneumatic Solenoid Driver Cable is this same driver cable that is included in the Pneumatic Kits. On one end of the Driver Cable is the standard 3 wire PWM Connector which connects to a VEX Microcontroller Digital Output. On the other end is the 2 wire Pneumatic Connector which mates directly to the Pneumatic Solenoid. This cable takes the digital On\Off signal and controls the 5V power applied to a pneumatic solenoid. The Pneumatic Solenoid Driver Cable is rated for about 3/4 Amp and is sold as a 2 pack.

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Intake Roller (8-pack)

Intake rollers are specifically designed for ball intake systems. The flexible rubber fingers grip the ball. The fingers also deflect, allowing for ball size variation.

  • (8) pack.
  • Rubber fingers.
  • Hard plastic center with square hole.

Our Price: $12.99
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Motor 393 Refurb Kit

Lose your gears? This convenient replacement gear pack for the 2 Wire Motor 393 will get you going again without having to purchase a new motor. Includes one full set of gears.

  • Only for the 2 Wire Motor 393
  • (1) of each internal cluster gear
  • (1) set of replacement case assembly screws

Our Price: $4.99
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Wheel Kit

VEX has the right tire for any terrain. Three different size wheel diameters (2.75" 4" 5") are available each with a different tread type; choose the perfect wheel for your application.


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Advanced Motion Kit

156 popular motion components. Allows you to create even more advanced robots with more complex mechanisms. Great for any user who wants to build bigger and better robots.

Currently Unavailable

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1/4" Pitch Bearing Flat (10-pack)

These 1/4" Pitch Delrin Bearings are specifically designed to mount to VEX 1/4" Pitch Metal. Use them with other components from the VEX Motion Subsystem to create intricate and compact mechanisms.

  • Low friction allows shafts to turn smoothly.
  • Mount with Screws & Nuts or Pop Rivets
  • Create intricate and compact mechanisms.

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Clutch (3-pack)

For use with a VEX Continuous Rotation Motor or VEX Servo.

  • (3) Clutches
  • (3) Short Axles for Clutches

Our Price: $4.95
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High Strength Sprocket 18 Tooth (4-Pack)

These reinforced sprockets can transmit higher loads over long distances. Use this kit to withstand higher stresses and lift heavier loads. Useful for any application where regular chain just won't cut it.

  • High Strength Design - lift up to 50 lbs
  • (5) size options available individually
  • Use with High Strength Chain or Tank Tread

Our Price: $12.99
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High Strength Sprocket 24 Tooth (4-Pack)

These reinforced sprockets can transmit higher loads over long distances. Use this kit to withstand higher stresses and lift heavier loads. Useful for any application where regular chain just won't cut it.

  • High Strength Design - lift up to 50 lbs
  • (5) size options available individually
  • Use with High Strength Chain or Tank Tread

Our Price: $12.99
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High Strength 60-Tooth Gear (8-pack)

Build mechanisms capable of achieving higher torque or speed than ever before - lift heavier loads and survive bigger impacts with the additional gear ratio options provided by the largest high strength gear available.

  • Works with the VEX High Strength Gear Kit or any VEX spur gear
  • Double-thick face width and ribbing provide added strength
  • Metal Square Hole Inserts prevent axles from "stripping"
  • Build gearboxes that resist high shock-loads
  • Bolt gears together for added strength

Our Price: $14.99
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Additional High Strength Chain

This kit provides additional high strength chain that works with the VEX High Strength Sprocket & Chain Kit.

  • (140) High Strength Chain Links
  • (20) Attachment Links
  • High Strength Design - up to 50 lbs.

Our Price: $24.99
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High Strength Sprocket 12 Tooth (4-Pack)

These reinforced sprockets can transmit higher loads over long distances. Use this kit to withstand higher stresses and lift heavier loads. Useful for any application where regular chain just won't cut it.

  • High Strength Design - lift up to 50 lbs
  • (5) size options available individually
  • Use with High Strength Chain or Tank Tread

Our Price: $12.99
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Motor Controller 29

The VEX Motor Controller 29 uses a standard PWM signal (like that originating from the 3-wire ports on VEX Microcontrollers) to drive a VEX 2-Wire Motor.

Note: We recommend using no more more than one (1) 3-Wire extension cable in between the Motor Controller 29 and a VEX Microcontroller. For longer extensions, use 2-Wire extension cables in between the Motor Controller 29 and a VEX 2-Wire motor.


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