Check the listing for details. For Traxxas MINI MAXX,MINI XRT-FRONT and REAR ADJ. PROGRESSIVE SPRING SHOCKS. Color: Black, Condition: New. Listed at 44.91 USD. TXMM087FR ---ALLOY 6061-T6 FRONT AND REAR ADJUSTABLE PROGRESSIVE SPRING SHOCK 87MM FOR TRAXXAS MINI MAXX / MINI XRT Colors Available ---Red, Blue, Orange, Green, Black, and Silver Replaces Traxxas Part Number: ---3760, 10765 Product Information: ---The 6061-T6 alloy shock absorbers are filled with oil (Injected with 500cSt silicon oil). ---The black progressive spring installed on the shock absorber has a wire diameter of 1.1mm. GPM also ships two additional progressive springs, a silver progressive spring with a wire diameter of 1.2mm, and a gold progressive spring with a wire diameter of 1.3mm, which can be replaced according to your own needs ---The front or rear shock absorber center distance is 87mm, the shock shaft is thickened from the original 3.0mm to 3.