OS Engines

Exhaust Cam: Sirius 7

Standoff 5x44.5mm 1-3/4" (4): GT55

Cylinder & Piston Assembly O.S. Speed R2106

Cylinder Head: GGT15

Outer Head: 21XZ-R

Choke Valve: WLA-2, GT55

Rear Bearing: FS-61

Lock Cone: 40P/60GP

Front Ball Bearing: 40, 46, 48

Rocker Arm: F61-300

Mixture Control Valve 18TM

Cam Cover: FS-120 Surpass

Cylinder Head: FSa-56II

Rear Bearing: 12TR

Ignition Module IG-02: GT33

90 Degree Muffler Extension Screws (2): 120AX

Speed Hex Wrench Driver 2.0mm

O.S. Metering Needle Assembly 22D Speed B2103

Piston Pin: FS-95V

Locknut Set: FS-120 Surpass

Needle Valve Holder Assembly: 91SZ-H Hyper

#10 A5 Glow Plug Cold Air

21TM ABC .21 Engine with Manifold: 2.5 and 3.3 Revo

Thermo Insulator 21J3