143" | 139" Monster Big Bore Kits / M8 Motors
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143" | 139" Monster Big Bore Kits / M8 Motors

$1,899.95
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No Shipping to CA Cylinder Kits for '17 - '22 M8 Motors 143" Kits fit 114" / 117" Motors - 4 1/2" Bore; 4 1/2" Stroke; 11.4:1cr (with 88cc Heads) 139” Kits fit 107" 4 1/2" Bore; 4 3/8" Stroke; 11.2:1cr (WITH 88cc HEADS) Unleash extreme power with the Revolution Performance 143" - 139" Monster Big Bore Kits for M8 Motors, specifically engineered for motorcycle enthusiasts who demand the highest levels of performance and durability. This kit is perfect for transforming your M8 motor into a formidable powerhouse. Key Features: Aerospace-Grade Aluminum Cylinders: Crafted from aerospace-grade all-aluminum, these cylinders feature a nickel-silicon-carbide (NSC) electroplated bore, eliminating the need for sleeving and allowing for larger bore sizes. Enhanced Engine Efficiency: NSC-plated cylinders reduce friction, which not only boosts horsepower but also lowers engine temperatures, contributing to a longer engine lifespan. Comprehensive Kit Components: Each kit includes a pair of NSC-c

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