Enhance the classic look of your vintage Triumph motorcycle with the Triumph 500/650 Primary and Gearbox Chrome Dome Nut Pair. The domed “acorn” nut is important as it is used to secure the outer gearbox cover and the primary chaincase cover. The chrome finish lends a nice look to a visually prominent fastener on both covers.
The domed nut is a chrome finished nut with 5/16″-26 TPI CEI threads, as used on pre-1969 Triumph unit-construction 650 primary and outer gearbox covers. Made in the UK.
The nut is tightened onto retaining studs with a washer under the head of the nut. Sold in a pair or 4 nuts (or 2 pairs).
Key Features:
- Compatibility: Suitable for Triumph 500 and 650 models produced up to 1968, these nuts are crafted to meet the original CEI (Cycle Engineers Institute) specifications, ensuring authenticity and precision.
- High-Quality Chrome Finish: The nuts boast a durable chrome finish, providing both aesthetic appeal and resistance to corrosion, maintaining the classic look of your motorcycle while offering long-lasting protection.
- UK Made: Manufactured in the UK, these nuts reflect the heritage associated with classic British motorcycles.
Additional items to consider:
- Triumph Norton BSA Lucas Pre-Unit 5/16″ CEI Domed Headlight Bolt(s) 1932-60 PN# 11-2201
- Triumph 500 650 1964 Fork Top Nuts (2) 26TPI 1964-1967 PN# 97-1762 H1762
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