O.S. Engine Speed Tuned 21VZ-B V-Spec II World Edition  [OSMG2070]

The O.S. Speeds controllable energy faculties and interestingly lower fuel usage had been an adding element to Atsushi Hara winning the Worlds in Charlotte, New York. Atsushi Hara's run times between pit times were eight moments and thirty seconds versus rivals at seven mins and thirty moments. This along with his fabulous driving allowed Atsushi Hara in order to make one less pit stop and win the Worlds.

18 machined holes in the cooling head for lighter weight and more efficient air conditioning.
Hardened, chrome-plated 4-port liner.
Machined piston with synchronous rings.
Specifically coated crankshaft and rear ceramic bearing prevent wear and friction. The Crankshaft is silicone full of precision to aid with atmosphere and gas movement through the motor. Tungsten loads for added stability at higher rpms.
Reshaped crankcase core.
21JS slide-valve carb with 6 mm, 6.5 mm & 7 mm carb restrictors.
P3 Ultra Hot Turbo plug included.
"World Champion" etched into the head and crankcase.

REQUIREMENTS

• Stock Number: OSMG2070
• Displacement: .21 cu in (3.46 cc)
• Bore: 0.654 in (16.6 mm)
• Stroke: 0.63 in (16.0 mm)
• Practical rpm: 3,000-40,000
• Output: 2.5 hp @ 34,000 rpm
• Weight: 12.3 oz (349 g)
• Includes: 6 mm, 6,5 mm & 7 mm carbohydrate restrictor