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.21 Engines Off Road
> O.S. Speed B2103 Type S Buggy with T-2100SC Pipe
O.S. Speed B2103 Type S Buggy with T-2100SC Pipe
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The B2103 has a lineup of two types of engines with different engine characteristics to meet driver preferences and course layout. Medium and high speed range Bore & stroke adopt long stroke of 16.27mm x 16.80mm common to both models. The designed crankcase, engraved with the O.S. SPEED logo, has a redesigned cooling fin that gives the buggy engine a powerful look. Furthermore, the newly designed crankshaft in pursuit of optimization of the rotational mass succeeds in the technique of the OS SPEED tradition such as adopting a DLC coating and 2 tungsten weights and adopting a ceramic for the rear bearing. The inner head has an O-ring that improves vibration reduction and dust resistance. A combo set with a set of exhaust system parts (T-2100 SC tuned silencer & M2004 (85 mm) exhaust manifold) that are both suitable for both models was also added to the lineup.What should be inherited as a champion brand, 'It will constantly evolve' B2103 gained further attractiveness as an off-road buggy engine, please enjoy the overflowing power and drivability with your own hands.
The crankcase, on which OS SPEED logo is engraved, has enough surface area for effective heat dissipation.
Type R 5-ports liner which performs excellent at medium and high speed range. Type S 3– ports liner performs well at medium and low speed range.
Type S has high vertical finned low-profile cooling head for improving the car drivability with low gravity.
For reducing vibration and preventing dust, the inner head is adopted silicon O-ring.
Type S features the 22D carburetor which emphasizes quick response and smooth acceleration.
Type S and Type R both adopt a designed ball link which can change the position of fixing screw for easy access.
DLC Coated Crankshaft with Tungsten weights and potted with silicone.
Displacement : 3.49cc / 0.213 cu.in.
Bore : 16.27mm/0.641in.
Stroke : 16.80mm/0.661in.
practical rpm range: 4,000-42,000 r.p.m.
weight : 347g / 12.24oz (TYPE-S) 352g/12.42oz.(TYPE-R)
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