• 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

As competition-level buggy engines go, the 21XZ-B VII is a super value! By making it lighter, lower and cooling running, it exceeds the expectations of even pro racers — delivering power comparable to the Speed Spec II at a lower price. 1/8 scale drivers looking for a performance advantage will find it with the 21XZ-B VII powerhouse!