Replace the hard to get to stock slotted or “D” shaped screws with our Weslake custom made Brass Idle Mixture Thumbscrews.
Sold singularly. Add two to cart for Bonnie's Etc. 3 or 4 for other carb model Triumphs.
Unlike other thumbscrews on the market, our screws are EXACT replicas of the stock screw’s needle taper and length. This allows the years of knowledge gained from the Triumph community to apply directly to these screws.
What does this mean? 3 turns out on the stock screws equals 3 turns out with these!
The knurled heads are machined out to reduce weight and vibration susceptibility.
Fits all years Bonneville, T100, Thruxton, Scrambler, America and Speedmaster carb models.
Also fits CV36 carbs fitted to 3 & 4 Cylinder Carb Model Triumphs.
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