Harris Performance have new stainless steel/titanium slip-ons for the 09/10 Yamaha R1. They have removable baffles and a carbon heat shield for the left hand pipe.

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There are designed to work without re-mapping, but Harris say that dyno set-up will achieve the best results.

The silencers with carbon composite heat shield cost £599; you’re looking at £499 for the exhaust alone.

More info: 01992-532501 or www.harris-performance.com.