We are now stocking a new Hepolite valve spring kit for early Triumph pre-unit twins that feature a "cast iron head". This is a new quality spring kit ready to be installed...
Fits Triumph 350 & 500 Pre-Unit Twins from 1952-1956. Also fits Triumph 650 Pre-Unit Twins (Thunderbird, 6T, Bonneville, T120, Tiger, TR6 & T110) from 1952-1956. Please refer to your parts catalog for proper fitment.
Please note that our valve springs are sold in a set as pictured
**Features**
- Made by Hepolite
- OEM part numbers are 99-3700, 70-1487, 70-1488, E1487, E1488 & VS510