Big Bore Kits for the 2021 Fat Bob

7 verified-fit parts, each checked against the 2021 Fat Bob specifically. Lowest price first.

• Fuel MotoSP 128" Piston & Cylinder Kit - M8 (114/117")$899.95
• Fuel Moto128" Big Bore Piston & Cylinder Kit - Gen 1 M8 (114/117")$1,199.95
• Fuel MotoM8 132" Big Bore Kit (114/117" Engines)$1,499.95
• Zippers PerformanceZipper's M8 128" Cylinder Kit, -2.8cc Flat-Top Pistons⚠ Has fit notes · ⚠ Race/closed-course product$1,529.00
• Zippers PerformanceZipper's M8 128" Cylinder Kit, -6.12cc Dished Pistons⚠ Has fit notes · ⚠ Race/closed-course product$1,529.00
• Zippers PerformanceZipper's M8 128" Cylinder Kit, +1.9cc Domed Pistons⚠ Has fit notes · ⚠ Race/closed-course product$1,889.00
• Fuel MotoM8 128" Piston & MotorWitch Billet Cylinder Kit (114/117" Engines)$2,999.95