
The OS Speed 21XZ-B is a high performance engine produced by OS's Speed Team technicians. Based on the MAX-21XZ-B, major parts have been refined to have a powerful potential equal to more expensive specially tuned or modified engines.



| Displacement: | 3.49cc |
| Bore: | 16.27mm |
| Stroke: | 16.8mm |
| Practical R.P.M. | 4,000-40,000 r.p.m |
| Power Output: | 2.6 ps / 34,000 r.p.m |
| Weight: | 355g |



Standard Accessories:
- 1 x Glow Plug P3 T-type head (Turbo head)-hot
- 1 x Exhaust Seal Ring
- Carburetor Reducer 6mm & 7mm, with 'O' ring (1 pc each)
- Dust Cap dia 3, dia 16, dia 18 (1 pc each)

DESC2: 2.6ps/34,000rpm
DESC3: 4,000-40,000rpm
DESC4: 355g(12.52oz)
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