Upgrade or restore your classic Triumph motorcycle with this genuine 3/8″ x 4″ crankcase bottom bolt, engineered to meet original factory specifications for a precise fit and dependable performance.
Key Features
- Diameter: 3/8 inch
- Thread Pitch: 20 Threads Per Inch (TPI), British Standard Fine (BSF) or Unified National Fine (UNF) depending on application
- Length: 4 inches
- Part Number: 70-6929 (also referenced as E6929)
Applications
- Designed specifically for use as the crankcase bottom bolt on Triumph 650cc motorcycles, including popular models from the 1960s and 1970s
- Essential for securing crankcase halves, ensuring structural integrity and proper engine assembly
- May also fit select BSA and Norton motorcycles—always verify with your model’s parts manual
Benefits
- Manufactured to original Triumph specifications for authenticity and reliability
- Ideal for restoration projects and routine engine maintenance
- Ensures secure assembly, helping maintain engine alignment and performance
Compatible with a range of classic Triumph motorcycles—refer to your parts guide for details
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.
