1/8th Scale Aluminum Bonded Komposite (ABK) Medium (Stock) Weight: These stock weight shoes are the recommended starting point for all off-road racing applications. Like all Buku Komposite shoes they are exceptionally durable and will not cause wear to the clutch bell.

1/8th Scale Aluminum Bonded Komposite Heavy Weight (ABK-H): These shoes are moderately heavier than the stock weight shoes and will have a more aggressive torque delivery. They are recommended for situations where high power and high traction exist and a suitable torque delivery cannot be reached with the stock weight shoes. This condition becomes evident when the clutch is not delivering sufficient torque (motor pulls through the clutch causing an RPM lag) but spring tension levels cannot be reduced further because the clutch is starting to engage at idle. These shoes can also be used when a driver prefers more “snap” in clutch engagement. By running a moderately higher level of spring tension the shoes will not bog the lowest rpm levels but will engage aggressively thereafter without slipping excessively.

1/8th Scale Aluminum Bonded Komposite (ABK-L) Light Weight: These shoes are moderately lighter than the stock weight shoes and will have a less aggressive torque delivery. They should be used when more slippage and less torque delivery is required. Typical conditions include very poor traction, or high traction and comparatively low power. In these situations the less aggressive torque delivery will make it easier to regulate slippage without the excessive spring tension levels which cause throttle lag.

1/8th Scale Aluminum Shoes (not pictured): Because of the inherently inferior wear characteristics of aluminum when used as a friction material, we only recommend running aluminum shoes in off-road racing as a last resort if suitable performance cannot be reached with a Komposite shoe. Buku aluminum shoes are made from the finest USA made 7075 aluminum and will perform accordingly. Like all aluminum shoes they will require maintenance in the way of inspecting the clutch bell and removing excessive aluminum deposits and also removing any burrs or mushroomed material from the edges of the shoes.