O.S.® Speed 21XZ-B engine – Prepare for a trip to the podium!
Top drivers including Mark Pavidis and Atsushi Hara can vouch for the victory-taking technology of O.S. Speed engines. Both have stood in the IFMAR Off-Road World Championship winner’s circle as a result of its powerful edge. Now another O.S. engine offers you the same advantage! The O.S. Speed 21XZ-B engine has a completely new design that delivers instant throttle response and impressive torque over the entire rpm range – all at a very attractive price. Check it out:
- Race-winning power and performance.
- Fuel efficiency improved by 8% (compared to the 21XZ-B).
- Black-anodized cylinder head with reduced height (by 9mm, compared to O.S. Speed 21VZ-B V-Spec.II) plus additional holes for improved cooling and less weight.
- Lowered center of gravity for steadier car handling.
- Newly designed 21J2(B) three needle carburetor with 6, 6.5 and 7 mm aluminum restrictors.
- Optimized 3-port sleeve with special Speed version inner head and porting, for smoother, sharper acceleration.
- Strong, DLC-coated crankshaft with silicone-filled intake passage offers improved fuel flow, and better balance for improved performance.
- Ceramic crankcase ball bearing.
- P3 glow plug.
SPECIFICATIONS
Displacement: 0.213 cu in (3.49 cc)
Bore: 0.641 in (16.3 mm)
Stroke: 0.661 in (16.8 mm)
RPM Range: 4,000-40,000
Power Output: 2.6 hp @ 34,000 rpm
Weight: 12.52 oz (355 g)
Retail OSMG2051 21XZ-B Speed ABC 21J2(B) $749.99 OSMG2938 T-2060SC WN Tuned Pipe Complete Set 199.99 OSMG2939 T-2060SC WN Speed Tuned Pipe 149.99 OSMG2702 M2000SC Exhaust Manifold 63.99 OSMG2701 M2000 Exhaust Manifold 51.99
Visit the O.S. Engines website at www.osengines.com







