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Top » Catalog » CAR COMBUSTION ENGINES » 2721 » OS 21 VZ-B SPEC
The raw power to exploit a split-second opportunity is there, tempered by the ability to fine-tune and finesse throttle control to the needs of different tracks and situations. And to help keep the 21VZ-B V-Spec-T (P) at the peak of its power, O.S. has given it a billet aluminum piston, hardened ABC sleeve for added wear resistance and a new crankshaft design that's simultaneously slimmer and stronger than any O.S. crankshaft ever made. The 21VZ-B V-Spec-T (P) — designed for first-place finishes over the long haul — from O.S. * More power and durability. The brass sleeve is chrome-plated for performance and hardened to withstand the wear that racing action can produce. CAD-refined and CNC-machined ports smooth airflow and boost power. * Track-tune in seconds! Increase control on low-traction tracks by inserting the 8 mm (red) or 9 mm (blue) carb restrictor. Takes only a second, but pays off, lap after lap. SPECIFICATIONS: Displacement: .21 cu in (3.5 cc) Bore: 0.653 in (16.6 mm) Stroke: 0.629 in (16.0 mm) Practical rpm: 3,000-40,000 Output: 2.5 hp @ 33,000 rpm Weight (w/o muffler): 12.7 oz (360 g)

This product was added to our catalog on Wednesday 17 March, 2010.