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O.S. SPEED B21 Adam Drake 4 Off-Road
€340.00
O.S. Engines would like to introduce new O.S.SPEED B21 ADAM DRAKE 4. The latest collaboration engine with world famous O.S. Team driver Adam Drake.
The cylinder liner, crankshaft & cooling head has been redesigned to Adam Drake’s spec for better balance, more torque and more power for better driving performance.
Main changes (compared to AD3):
Cylinder liner: Revised port-design for more torque.
Crankshaft: Inner diameter has changed for better low to mid end power.
Combustion chamber: Redesigned for more torque
Outer head: Extra fin for better cooling, reduced weight, lower center gravity for better balance and new laser design with double anodized colors.
Specs:
Displacement: 3.49cc
Bore: 16.4mm
Stroke: 16.55mm
Output: 2.65ps / 2.61hp @ 34.000RPM
Practical RPM range: 4.000-42.000
Engine Weight: 352g
Included:
Glowplug: O.S.SPEED P3
Reducers: 6II (blue) AL2 & 8mm (blue) AL
Exhaust seal ring
Dust cap set: 3/16/18mm
1FH00