Grade 12.9 bolts provide superior strength to prevent loosening and breakage
Longer bolt design increases thread engagement for added security
Black finish makes bolts easy to distinguish from OEM components
Torque to OEM specification for reliable installation
Compatible with Yamaha YFZ450R for precise fit
Summarized by Shop
Protect your engine with these upgraded flywheel to starter clutch bolts for the Yamaha YFZ450R. The OEM bolts are known to loosen and break under normal use. Replace them before they cause serious damage to your engine.
Stronger grade 12.9 bolts
Longer for increased thread engagement
Black finish for easy differentiation from OEM
Bolt Grade
12.9
Bolt Length
Longer than OEM
Finish
Black
Torque Specification
12 ft-lbs (144 in-lbs) with Loctite Red 272 or equivalent
Installation
Requires new OEM gasket recommended
Flywheel Included
No
Summarized by Shop
5.0
12 ratings
5
4
3
2
1
Preventing a grenade! Thank you
J
Jay · June 9, 2026
Well made. Threaded in easily. I don’t know if the factory bolts are really an issue, but for $10.00 it is worth it. I also used RTV inplace of the gasket with no leaks
H
Huey · November 19, 2025
This is the better option to do a nice upgrade on the Yamaha YFZ 450 with them bolts . I’m so happy thank you so much.