For the #9036 rear bumper

engineered to fit the MTXL

The infinitely adjustable support arms can sweep out to roughly 6

It's built as a direct-fit upgrade shared across these popular Axial crawler chassis

Genuine Kyosho part SIL30000B

Losi LOS263000 Front Fork Spring Set: Promoto-MX F8 Parts For the #9036 rear bumperLosi LOS263000 Front Fork Spring Set: Promoto MX The Losi LOS263000 is a front fork spring set built for the Promoto MX. These springs support the front suspension, controlling how the forks compress and rebound over bumps and jumps. Replace worn or sagging springs with this set to keep your Promoto MX's front suspension performing consistently. Genuine Losi part, number LOS263000 Front fork spring set Compatible with Promoto MX