This is the O.S. 21XZ-B VII Off-Road Competition Buggy Engine. The 21XZ-B VII is light, cool running, with a low CG. Delivering power comparable to the Speed Spec II, the 21XZ-B VII exceeds expectations at a lower price. 1/8 scale drivers looking for a performance advantage will find it with the 21XZ-B VII powerhouse!

Features:

• Performance that rivals that of the acclaimed Speed 21XZ-B Spec II
• Shares the same piston, liner and con rod as the Speed version
• Lightening holes in the cylinder head reduce overall weight
• Other enhancements include a lower CG and improved cooling
• A 22B2 single needle carb makes tuning a breeze
• Optimized power band
• Silicone filled crankshaft with tungsten counter weights
• Blue anodized head
• Incredible throttle response
• 7mm carb reducer is included

Specifications:
Displacement: .213 cu in (3.49 cc)
Bore: .641 in (16.27 mm)
Stroke: .661 in (16.8 mm)
Practical RPM: 3,000-41,500
Power Output: 2.7 hp @ 34,000 rpm
Weight: 12.77 oz (362 g)
Includes: 2282 carburetor, 6mm and 7mm carb restrictors, P3 glow plug, exhaust seal and dust cap set