O.S. SPEED B2103 TYPE-S Off-Road*

O.S.SPEED B2103 Type-S - 1/8 Off-Road Racing Engine

We are proudly introducing our new OS Speed B2103 Type-R and Type-S 3.5cc buggy engines, which not only have been designed newly, but also modified technically for improving their performance over excellent results at past numerous competitions. For corresponding driver’s preference also the course layout, two types B2103 Type-R and Type-S with different characteristics are in lineup. Both of them are long stroke engines φ16.27 mm x 16.80 mm. The most suitable and featured crankcase designed for buggy engine has been engraved with OS SPEED log as you can see in the pic, and the engine utilized a cooling head for the best possible cooling in high ambient temperatures. More than that, both engines come with a rear ceramic bearing and the traditional OS techniques DLC-coated crankshaft coming with tungsten balanced. For enhancing vibration reduction and preventing dust, the inner head also was adopted silicon O-ring. Both engines models are purchased available as engine only or including the T-2100SC exhaust and 85mm M2004SC manifold set.

As for the Type-S engine, the 3—plus-1-port long-stroke power plant offers increased torque in the low to mid RPM range while being easy on fuel consumption. The engine utilizes the same updated crankcase, end cap and DLC-coated crankshaft, but comes with a more efficient 22D carburetor for smoother throttle response and greater mileage. The engine sports a low-profile cooling head for an overall lower centre of gravity.

Specifications:

• Displacement: 3.49cc
• Bore: 16.27mm
• Stroke: 16.80mm
• Output: 2.64hp @ 34.000r.p.m
• Practical rpm range: 4.000-42.000
• Weight: 347g (TYPE-S) / 352g (TYPE-R)