O.S. MAX B21 Off-Road Engine
From
$299.00
MAX-B21 is great for the entry level user to the sports level user and has excellent cost performance. Based on the O.S.SPEED series engine, it has a well balanced combination of smooth speed and power delivery. It can be used in both on (GT) and off-road racing situations.
The outer head is based on the MAX-21XR-B VER.3, but it has reduced weight for better performance. Also, the shape of the combustion chamber of the inner head has been revised to improve combustion efficiency and response in the low speed range.
In addition, more stable idling avoids stalling which equals to easy carburetor adjustments.
Includes:
-P3 glow plug
-Reducer 6mm(Orange) and 7mm(yellow)
-Exhaust seal ring
-Dust cap set 3mm/16mm/18mm
| Displacement | 3.49cc / 0.213 cu.in. |
|---|---|
| Bore | 16.27mm / 0.641in. |
| Stroke | 16.80mm / 0.661in. |
| Output | 2.6ps / 2.56hp / 34,000r.p.m. |
| Practical RPM range | 4,000-41,000 r.p.m. |
| Engine Weight | 361g / 12.73oz. |
Engine unit only, exhaust manifold and pipe not included.
Free ground shipping.
Quantity