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O.S. SPEED R21 EUROSPEC II
OS1DR00
O.S. SPEED R21 EUROSPEC II
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O.S. SPEED R21 EUROSPEC II
This engine inherits the smooth and easy-to-use feeling of the predecessor, O.S. SPEED R21 EURO Spec., And by reviewing the counterbalance of the crankshaft, low and mid end power delivery has been improved. The smooth RPM drop and idling stability are also improved, and the optimum performance is demonstrated even in the long and harsh race scene. Succeeding the previous model, every part has been improved including the outer head with new design to improve the cooling performance.
Features:
Specifications
Content: 3.49 cc
Bore: 16.08mm
Stroke: 17.20mm
HP: 2.8 ps / 2.76 hp at 33000 r.p.m.
Practical range: 4000-45000 r.p.m.
Weight: 340g
OS Exhaust gasket 21 BLACK(10)
17,32 €
Front Bearing T1201
12,84 €
OS kit springs short(3)
9,00 €
O.S. Carburetor reducer 8mm RED Alu.
10,99 €
Head Gasket T12 Speed 0.1/0.15
3,50 €
Induction Silencer .12/.21 INS
32,34 €
Engine maintenance Oil 30ml
9,53 €
Cleaning Gum(100Gr) OS SPEED
18,19 €