How to Choose the Right Replacement Parts for Your Yoshimura Exhaust

Quick Answer

Start by identifying the exact part you need—check your exhaust system's model and serial number, then match it to the replacement part. For sound reduction, choose a sound insert kit; for damaged mufflers, consider a replacement muffler; for worn hardware, order rivets or heatshields. Always verify fitment with our Insert Chart or contact Yoshimura support.

Your Yoshimura exhaust is built to last, but even the best systems need a refresh now and then. Whether you've had a tip-over, lost a rivet, or simply want to quiet things down, choosing the right replacement part starts with knowing exactly what you're replacing.

This guide walks you through the common replacement parts for Yoshimura exhausts, with concrete decision rules and fit guidance so you can order with confidence and get back on the road or track.

Identify Your Exhaust System First

Before you buy any replacement part, you need to know which Yoshimura exhaust you have. Look for the model name or serial number on the muffler can, end cap, or mounting bracket. Common series include Race, Signature, Speed, Street, and Enduro. If you can't find it, take a photo and email [email protected] or call 800-634-9166.

Once you know your system, check the specific part you need. For example, the YOSHIMURA MUFFLER DECAL FOR END CAP RS9 RIGHT SIDE is only for the RS-9 right-hand end cap. Similarly, the SOUND INSERT KIT RS-9 Muffler, 1.000" (INS-RS9A-K) fits RS-9 mufflers, while the RS-12 version has a different diameter. Using the wrong part can lead to poor fit or performance.

• Write down your exhaust model and any serial numbers before shopping.
• Use the Insert Chart on our website to confirm sound insert fitment.

When to Replace vs. Repair

Not every damaged part needs replacing. Minor scratches on a heatshield or a small dent in a muffler might be repairable. Yoshimura offers an accident repair service for some mufflers—check our website for details. However, if the damage is severe, like a hole ground into the side of the muffler, replacement is often more cost-effective.

For example, the 12'' ALPHA RIght Muffler Stainless/Carbon Fiber/Carbon Fiber End Cap Works Finish is a direct replacement for a damaged Alpha muffler. It's available in stainless, carbon fiber, or aluminum for street or off-road use. If you're unsure whether to repair or replace, call our sales department for advice.

• Repair is best for cosmetic damage or small dents.
• Replace if the muffler is cracked, has holes, or is structurally compromised.

Sound Inserts: Quiet Without Sacrificing Performance

If your exhaust is too loud for your local track or neighborhood, a sound insert kit is the answer. These kits reduce decibel levels and are available as optional equipment on many applications. The SOUND INSERT KIT RS-12 Muffler, 1.625" (INS-31-K) fits RS-12 mufflers, while the SOUND INSERT KIT RS-9 Muffler, 1.000" (INS-RS9A-K) fits RS-9 mufflers. Both are non-spark arrested.

Decibel reduction depends on your specific application, so check our Insert Chart to confirm fitment and expected reduction. Each kit includes the insert tube, end-cap collar, and set screw. Installation is straightforward, but if you have questions, our sales team can help.

• Measure your muffler outlet diameter before ordering.
• Sound inserts are not spark arrestors; they only reduce noise.

Hardware and Small Parts Matter

It's easy to overlook the small stuff, but a missing rivet or worn heatshield can ruin the look and function of your exhaust. The Dimple Style Rivet For Carbon And Titanium Sleeves (sold each) is a 3/16" x 1/16" stainless steel rivet designed for select carbon fiber and titanium sleeves. Order the exact quantity you need—no pack minimums.

Heatshields also take a beating. The YZFR1 09-14 Tailpipe Heatshield Right Side is a direct bolt-on replacement that keeps your Yoshimura system looking tight. If you can't find a specific small part, contact us; we stock rivets, rivet bands, nuts, bolts, and grommets.

• Inspect your exhaust regularly for missing or loose hardware.
• Order spare rivets before they're needed—they're inexpensive and small.

Decision Rules for Buying Yoshimura Replacement Parts

• If you need to reduce noise: Choose a sound insert kit that matches your muffler model (RS-9 or RS-12) and diameter. Verify with the Insert Chart. Sound inserts are non-spark arrested and decibel reduction varies by application.
• If your muffler is damaged: Assess the damage: small dents may be repairable via our accident repair service; holes or cracks usually require a replacement muffler. Replacement mufflers are available in stainless, carbon fiber, and aluminum for street or off-road.
• If you're missing hardware: Order exact replacement rivets, heatshields, or decals. Many small parts are sold individually, so you only buy what you need. Keep spare rivets on hand; they're inexpensive and can prevent bigger issues.

Key Replacement Parts at a Glance

• YOSHIMURA MUFFLER DECAL FOR END CAP RS9 RIGHT SIDE: This is for replacement RS-9 right hand end cap decal only. If your RS-9 end cap decal is scratched or peeling, this exact replacement restores the factory look without buying a whole new end cap.
• SOUND INSERT KIT RS-9 Muffler, 1.000" (INS-RS9A-K): Replacement Low-Volume Insert Kit for RS-9 Mufflers. Non-Spark Arrested. Available as optional kit on applications requiring different sound restrictions. Decibel reduction depends on application. Perfect for track days or noise-sensitive areas. Confirm fitment with our Insert Chart to ensure it fits your RS-9 muffler.
• 12'' ALPHA RIght Muffler Stainless/Carbon Fiber/Carbon Fiber End Cap Works Finish: Have you had a tip over and your muffler got munched or has a hole ground into the side of it? Sometimes this can be repaired and sometimes it’s cheaper to buy a new muffler. If your Alpha muffler is damaged beyond repair, this direct replacement gets you back on the road quickly. Available in multiple materials.
• Dimple Style Rivet For Carbon And Titanium Sleeves (sold each): This dimple-style rivet is a replacement service part for select carbon fiber and titanium sleeves. It is sold individually, so you can order the exact quantity you need for your project. Don't buy a whole pack when you only need one or two. These rivets are essential for securing carbon and titanium sleeves.

Fit Guidance: Will This Part Fit My Exhaust?

Best for

• Owners who know their exact Yoshimura exhaust model and serial number
• Riders who need a direct replacement for a specific damaged or worn part
• Those who want to reduce noise with a sound insert kit

Not for

• Owners who haven't identified their exhaust model—contact support first
• Those looking to upgrade performance; replacement parts restore original function
• Riders with generic or non-Yoshimura exhausts; these parts are model-specific

Choosing the right replacement part for your Yoshimura exhaust comes down to knowing your model and the specific part you need. Use the decision rules above, check fitment with our Insert Chart, and don't hesitate to contact our sales team at 800-634-9166 or [email protected] for personalized help. With the right part, your exhaust will keep performing and looking great for years.