The set includes a 39T machined hardened steel idler gear

Robinson Racing 8015 Extra-Hard Clutch Bell 15T

1V 50C LiPo Battery with XT30 Connector

Larger thread is more durable and will last longer than any M4 thread

Kato 2-862 HO Scale #6 492mm (19 3/8") Manual Left Turnout with 867mm (34 1/8") Radius Curve UniTrack

Team Losi Racing TLR234091 Front Arm Set Stiffezel 22T 4.0 SCT 3.0 NiMh Batteries The set includes a 39TTeam Losi Racing TLR234091 Front Arm Set Stiffezel 22T 4. 0 SCT 3. 0 This TLR234091 front arm set is a genuine Team Losi Racing part molded in Stiffezel composite, built as a direct fit replacement for the 22T 4. 0 and SCT 3. 0. Genuine Team Losi Racing part TLR234091 Stiffezel composite construction Front suspension arm set Fits the 22T 4. 0 and SCT 3. 0