Restore your classic Triumph motorcycle with the Triumph Bolt 5/16-22 x 1 3/4-Inch (PN# 70-4540)—a genuine OEM fastener engineered for precision and durability. This bolt is manufactured to original Triumph specifications, ensuring a perfect fit and reliable performance for vintage restoration or maintenance projects.
Key Features
- OEM Part Number: 70-4540
- Dimensions: 5/16 inch diameter, 22 threads per inch (TPI), 1 3/4 inch length
- Thread Type: CEI (Cycle Engineers Institute) standard
- Material: Steel (often available in stainless steel for enhanced corrosion resistance)
- Authentic Fit: Manufactured to match original Triumph factory standards for classic models
- Application: Designed for engine mounting, crankcase, or frame fastening (varies by model)
Benefits
- Authenticity: Maintains the originality and value of your vintage Triumph motorcycle by using period-correct hardware
- Reliable Performance: Engineered for strength and longevity, ensuring secure assembly in demanding engine or frame applications
Typical Applications
- Used as an engine mounting or crankcase bolt on various classic Triumph motorcycles
- Essential for restoration, repair, or replacement of worn or missing fasteners
- Ensures your restoration remains true to factory specifications, preserving both safety and authenticity
Upgrade your restoration project with the Triumph 70-4540 bolt—the trusted choice for enthusiasts seeking quality, reliability, and authenticity in classic British motorcycles.
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.






