Triumph 350 500 T90 T100 Unit Twins Cylinder Head Bolt 3/8″ x 5-7/16″ 26TPI 1961–1974 PN# 70-3795

Upgrade your classic Triumph engine with this premium Cylinder Head Bolt, engineered specifically for 350cc and 500cc T90/T100 unit twin models from 1961 to 1974. Designed with a torque stay extension, this bolt ensures optimal clamping force and long-lasting performance for your vintage motorcycle. Key Features Precision Fit: Manufactured to exact 3/8″ diameter and 5-7/16″ length with 26 threads per inch (TPI), matching original Triumph specifications for a secure and reliable fit. Torque Stay Extension: Features the correct extension to maintain proper torque and alignment, critical for the structural integrity of your engine assembly. OEM Specification: Produced to original equipment standards, ensuring compatibility and authenticity for restoration or repair projects. High-Tensile Strength: Crafted from robust steel for superior durability and resistance to stretching or failure under high engine loads. Corrosion Resistant: Finished with protective coating to guard against rust and corrosion, extending the service life of your engine components. Easy Installation: Designed for straightforward installation and removal, simplifying maintenance and rebuilds. Applications Suitable for Triumph 350cc and 500cc T90/T100 unit twin motorcycles (1961–1974). Intended for use as a cylinder head bolt with torque stay extension in classic Triumph twin engines. Why Choose This Bolt? Authentic Restoration: Faithfully reproduces the original Triumph part (PN# 70-3795), preserving the historical integrity of your motorcycle. Trusted by Enthusiasts: A preferred choice among Triumph restorers and mechanics for its precise fit, strength, and reliability. Made in the UK: Manufactured to the highest standards for classic British motorcycles. Restore your Triumph’s performance and reliability with this essential cylinder head bolt—engineered for a perfect fit and built to withstand the demands of vintage riding. The product images shown are for illustrative purposes only and may not be an exact representation of the product received. Manufacturers occasionally make minor cosmetic changes to items, such as color, finish, label, or design. These changes do not impact the item’s function or compatibility. Please contact us if you have specific concerns regarding appearance.