O.S. Engine OS-1A200 - O.S. Speed B2101 1/10 Off Road Buggy Engine  [OS-1A200]

The feature of OS SPEED tune is crankshaft has DLC finish / tungsten involved with it, permitting to pursue optimal timing of intake.
21J carburetor follow new reducer of 6.5 / 6 mm , that may achieve strong energy in moderate throttle response at low rate and middle/ high-speed range.

Spec:

• Displacement: 3.46cc (02111 cu. inch)
• Max energy: 2.65ps / 34,000r.p.m.
• Bore: 16.4mm
• Stroke: 16.4mm (0.646 inch)
• Practical r.p.m range: 4,000 ~ 42,000 r.p.m.
• Weight: 352g (12.42 oz)
• Includes: plug T-P4 Reducer 6mm (embedded) 6.5mm (included) Exhaust Seal Ring Dust Cap Set (3mm / 16mm / 18mm)