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the "narrow port" for the TR5/TR250 and early TR6's up through 1973
and have access to a wider range of tire options
Technical Support available
The World's #1 supplier of High Torque Gear Reduction Starters since 2001
Herald: 948s
Triumph TR2 TR3 TR3b & TR4 - Performance Roller Rocker Set 3.4 the "narrow port" for theSet of 8 Rockers that slide right on to your existing stock rocker shaft Our Roller Rockers reduce friction and wear = increased horsepower. Less side loading on the valve. Greater Valve Life. Slightly more aggressive that the stock ratio (1. 5: 1 vs. 1. 45: 1), but still very streetable. Reduces valve chatter. Ratios are more accurate from rocker to rocker (vs stock rocker arms), making the lift more even across all of the cylinders. Can be used on