The U-joint pins are held captive by the ball bearings so you never have to worry about losing a pin

eight flat washers and eight lock washers

One Foam Insert Element

Tekno RC TKR4177 "M5" 5mm Bore Mod 1 Pinion Gear (17T)

Constructed with dual ball bearings

HPI 85236 Radio Box Set Savage Flux/ XL/ 4.6 Slash Parts The U-joint pins are heldHPI Racing HPI85236 Radio Box Set Savage Flux This is the Radio Box Set for the HPI Savage X. FEATURES: Black plastic construction INCLUDES: One radio box. One radio box top. One parts tree with mount parts. REQUIRES: Installing on chassis according to instructions in manual This Part Fits the following kits parts: Savage Flux HP RTR 2. 4GHz STD Savage XL 2. 4GHz STD RTR Savage X 4. 6