Big Bore Kits for the 2023 Road King

5 verified-fit parts, each checked against the 2023 Road King specifically. Lowest price first.

• Fuel MotoSP 124" Piston & Cylinder Big Bore Kit (107" Engines)$899.95
• Fuel MotoM8 124" Piston & Cylinder Kit (107" Engines)$1,199.95
• Fuel Moto129" Big Bore Kit Outlaw - M8 (107")$1,499.95
• Zippers PerformanceZipper's M8 124" Cylinder Kit, -5.5cc Dished Pistons⚠ Has fit notes · ⚠ Race/closed-course product$1,529.00
• Zippers PerformanceZipper's M8 124" Cylinder Kit, Flat-Top (0cc) Pistons⚠ Has fit notes · ⚠ Race/closed-course product$1,529.00