Kawasaki Exhaust Parts & Accessories

Most of the 723 products here are not exhausts. They are the part of an exhaust that wears, fails or gets bought again on its own: noise damper inserts (often called a dB killer), end cap sets, heat shields, muffler clamps and muffler brackets, gaskets, springs, and the small fixings a fitting job needs. All of it is for sale with 10% off RRP and free UK delivery available. If the can itself needs replacing, not repairing, that's a job for the exhausts shelf. Not this one. Most of what is here comes from Akrapovic's own spares catalogue, with LeoVince's own accessory parts alongside it.

The part that gets bought on its own

The single biggest group on the shelf, at 173 of the 723, is the noise damper insert (also sold as a dB killer). It's the baffle that sits inside the muffler outlet. It's more than half again the size of the next one. That's a sign of what this part is: something ordered separately from the muffler it came with, more than anything else on this shelf.

End caps and heat shields are the next two largest groups, at 102 and 95. Most are carbon fibre, with a smaller titanium run. Both are bought either to replace a damaged original or to swap the finish on a muffler that's otherwise fine. At least one manufacturer states its heat shield fits either the standard system or its own slip-on, so check the specific listing rather than assuming.

Sleeve repair kit or repack kit: not the same job

These two are the easiest thing on this shelf to buy wrong. Between them, they're 66 of the 723 products here.

That distinction is drawn from two retailers' own listings for these kits, not from Akrapovic directly. We could not get a stable read of Akrapovic's own spare-parts pages. Treat it as a reliable pattern, not the manufacturer's own wording.

How often does an exhaust need repacking?

Fuel Exhausts, a Cumbria-based exhaust maker who repack their own systems as a service, put a figure on it. They recommend a repack "every 2 years or 12k miles (whichever is soonest)". That's their own guidance for their own product, not a universal service interval. But the symptoms they list are a fair checklist whatever muffler is fitted. It's "getting louder recently", the exhaust seeming "hotter than previous", or "strands of wadding" visibly blown out of the end.

Brackets, gaskets and the MOT

A snapped mounting bracket is a recognisable UK forum complaint. On one thread, a rider whose original bracket failed fabricated a replacement bolt instead of fitting a proper one. Other posters were not impressed. A muffler bracket or muffler clamp bought to replace a failed original is the straightforward fix, not an improvised bolt or a zip tie.

Downpipe joints fail the same way. On a separate UK thread, one rider's corroded downpipe snapped at the joint into the collector box. Another reported the identical failure on the same model. Mid-tour in Europe, they patched it with a scavenged tin can, sealant and hose clips to get home. A new gasket at the joint is the proper fix, not a roadside improvisation.

Why that matters at test time is spelled out plainly. An exhaust system that "has a major leak or is insecure" is a Major defect. But "a minor exhaust leak from... a connection joint or a pinhole does not justify rejection" (GOV.UK MOT Inspection Manual for Motorcycles, section 6, updated 1 April 2026). That is about how securely a bracket, clamp or gasket is holding things together, not about noise. A different part of the same section covers the muffler itself: a silencer marked "NOT FOR ROAD USE" or "TRACK USE ONLY" is also a Major defect, the same wording some manufacturers use on their own track-only variants.

What else the job needs

A sleeve repair kit or a repack kit is rarely the only thing that ends up in the basket. This shelf also carries a fitting kit that bundles a clamp, bracket and mounting material together. It carries rivets, washers, bolts and nuts sold on their own when only one has been lost or rounded off, and tape sold specifically for finishing a sleeve repair. It also carries spacer bushes and flanges that take up clearance at a pipe joint. None of it is dramatic. But it's exactly the kind of thing that turns one order into two if it's not checked before checkout.

Sixteen of the 723 are catalytic converters, mostly for scooters and smaller-capacity machines. A handful more are lambda plugs and sensor-related fittings for finishing that job once the converter itself is in.

What we don't sell here

Five products on this shelf are the exhaust spring itself: the retaining spring between header and can or link pipe. A dedicated hooked tool for fitting one is sold by other UK retailers, usually under the name "spring hook" or "spring puller". We do not stock that tool. If you are ordering a spring on its own, source the hook elsewhere. It's not on this shelf.

A few questions worth checking

Does a dB killer affect road legality? We won't call that one way or the other in our own voice. LeoVince's own product page describes what one does: "The optional dbkiller allows to reduce the sound level." Separately, the DVSA's MOT inspection manual lists a silencer marked "NOT FOR ROAD USE" or "TRACK USE ONLY" as a Major defect, so check the marking on the specific part before you buy.

Is a dB killer interchangeable between finishes of the same muffler? Not always. LeoVince's own spare-parts listing for one of its dB killers states it is not suitable for the carbon-fibre version of that muffler line, only the standard one. Check the material, not just the model, before ordering a replacement.

Is a repack kit the same as a sleeve repair kit? No. The distinction above holds across brands: a sleeve repair kit replaces the muffler's outer skin, a repack kit replaces the packing inside it. LeoVince's own spare-parts documentation for one of its mufflers lists an "Outer sleeve replacement kit" and a "Muffler repack kit" as two separate, separately coded parts, the same split this page's table draws for Akrapovic.