Upgrade or restore your classic Triumph motorcycle with this premium Outer Cylinder Head Bolt, designed specifically for the T90 and T100 models from 1957 to 1974.
Key Features
- Precision Fit: Manufactured to exact 3/8″ diameter and 2-3/4″ length specifications, ensuring a perfect fit for Triumph T90 and T100 engines.
- High Tensile Strength: Crafted from high-grade steel for superior durability and resistance to stretching or breaking under load.
- Accurate Threading: Features 26 threads per inch (TPI), matching original Triumph engineering standards for secure fastening.
- Extended Hex Head: Allows for easy installation and removal, even in tight engine spaces.
- Authentic Restoration: Faithfully reproduces the original part (PN# 70-4456), making it ideal for restorations or repairs that demand authenticity.
- Made in England: Manufactured to the highest standards, ensuring reliable performance and longevity.
Applications
- Suitable for Triumph T90 and T100 models (1957–1974)
- Designed for use as an outer cylinder head bolt in classic Triumph twin engines
Why Choose This Bolt?
- OEM Quality: Matches the original Triumph specification for peace of mind and mechanical integrity.
- Corrosion Resistant: Finished for enhanced protection against rust and corrosion, extending the life of your engine rebuild.
- Trusted by Enthusiasts: A preferred choice among classic Triumph restorers and mechanics.
Restore your Triumph’s performance and reliability with this essential cylinder head bolt—engineered for a precise fit and built to last.





