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Choosing the right Anti Pinch Pin

Updated on Oct 12, 2026

Choosing an Anti-Pinch Pin requires three checks: whether it fits through the bike, whether its usable length is sufficient, and whether the chain and lock are compatible.

Measure the opening

Measure the internal diameter of the opening the Pin will pass through. Then measure the distance across the bike along that route.

Check clearance around the exhaust, wheel and other components. There must be room for the Pin head, chain links and matching lock, not just the bar itself.

What does Usable Length mean?

Usable Length is the space available for the section of motorcycle and the chain links secured on the Pin. Add the thickness of every chain link that will sit on it to the distance across the bike.

Older nominal or overall length descriptions are different. Compare usable dimensions rather than the headline length alone, and do not apply an old conversion to a different Pin design.

Which lock do I need?

The current 24mm Pins are designed for the Squire SS65CS range. The current 30mm Pins are designed for the Squire SS80CS.

Check the exact Pin, chain and lock combination before ordering. A different lock may have the wrong body thickness or clearance even if its shackle appears to fit.

Will any 19mm chain fit a 30mm Pin?

Do not assume the pin will fit every 19mm chain but it is designed to fir the Pragmasis Protector 19mm chains. The Pin must fit inside the chain link, and the internal width can vary between chain batches or manufacturers. Chain gauge is the thickness of the steel, not the size of the opening inside the link.

Can you help check my bike?

Send us the make, model and year, photographs of the proposed route, the opening diameter and the distance across the bike. Tell us which chain and lock you plan to use. We'll do our best to help.