Secure your crankset reliably with the Shimano Crank Arm Fixing Bolt, specifically designed for Ultegra FC-6800 and compatible road cranksets. This precision-engineered bolt maintains correct preload on the Hollowtech II spindle for smooth performance.
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Material & Dimensions
Y1P417000 is crafted from high-grade steel with a sleek black oxide finish, ensuring corrosion resistance suitable for Malaysia’s humid and tropical climate. The threaded cap measures approximately 19.8 mm in diameter, aligning precisely with Shimano’s specifications. -
Compatibility
Classified as an “A-match” genuine replacement, this bolt fits multiple Shimano cranksets, including:
Ultegra FC-6800, FC-R8000; 105 series FC-R7000 / R5800; Tiagra FC-4700/4703; Sora FC-R3000/3030, Claris FC-R2000/2030, and Metrea FC-U5000.
Installation & Usage Instructions
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Installation & Torque
Insert the bolt into the non-drive side crankarm spindle. To preload the bearings properly, use a dedicated tool—such as Park Tool BBT-10.2 or the BBT-9 with oversized torx interface—and tighten the bolt to a torque of 12–14 N·m. -
Post-Ride Check
After around 100 km, recheck the bolt torque; use a torque wrench to ensure it’s still within spec. Crank arm looseness can lead to serious issues, including loosening or crank arm play.
Precautions & Maintenance Tips
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Use Genuine Parts Only
The correct shimano bolt (Y1P417000) is essential for safe fitment and precise preload. Substitutes may offer mismatched thread fit or insufficient strength. -
Avoid Overtightening
Overtightening can damage the crank interface or strip threads. Always use a calibrated torque tool and follow the recommended 12–14 N·m range. -
Routine Safety Check
Regularly inspect for play or movement in crankarms. If detected, retighten promptly to avoid wear or injury.
