4 in. Performance Wheel XL 0.5 in. Hex Bore

The 4 in. Performance Wheel XL is a virtually indestructible wheel made out of solid 6061 aluminum. This competition-proven design has been used on FIRST Robotics Competition robots for many years. This new version of this wheel is 50% wider than our regular 4 in. Performance Wheels for maximum traction. This wheel can take anything an FRC robot can throw at it, and much more. Additionally this new version also includes a 1/8 in. thick boss on the rear (flat) side of the wheel to prevent unwanted friction in bearing outer races. This also reduces the part count on drivetrains.

This wheel is designed to be driven by a 1/2 in. Hex shaft, but also allows for other motion hardware that utilizes a 1.875 in 6-hole bolt circle found in many AndyMark and competition robotics products. To mount one of these to the rear (flat) side, use a 250 Sprocket and Pulley Spacer. To mount one to the front, use a 550 Sprocket Spacer. This wheel does not include 1.47" wide tread material.
Note: This wheel is designed to utilize rivets to attach the tread to the wheel. AndyMark recommends steel 1/8" diameter rivets with a 0.251" - 0.312" grip range. The wheel has been manufactured with no holes on the rim, as it is intended to be a blank canvas for teams to install rivets freely.