MT-10 AT2 Slip-On vs Stock: Sound & Weight
By Yoshimura R&D of America, Inc. | Published: 2026-10-24
Category: Comparisons
Compare the Yoshimura MT-10 AT2 Stainless Slip-On to the stock exhaust. See real weight savings, hear the sound difference, and decide if this Street Series upgrade fits your ride.
Quick answer
Swapping the stock exhaust for the Yoshimura MT-10 AT2 Stainless Slip-On drops significant weight and gives the MT-10 a deeper, more aggressive tone. It's a direct upgrade for riders who want a lighter, better-sounding bike without changing the stock header.
Weight difference: real savings on the scale
The stock MT-10 exhaust system is heavy. The Yoshimura AT2 slip-on uses a stainless muffler and a carbon fiber heel guard to cut that weight. The reduction makes the bike feel lighter on its feet, especially during cornering or when lifting it off the stand. Because the AT2 retains the stock header, the savings come entirely from the muffler and mounting hardware.
Sound profile: deeper, but not obnoxious
The stock exhaust on the MT-10 is surprisingly quiet for a bike with an R1-derived engine. The AT2 slip-on opens up the CP4's signature growl without making it unbearable for daily riding. It's louder than stock at full throttle, but the tone is deeper and more refined—not just raw noise. This makes it a good middle ground for riders who want more presence without a full race system.
AT2 vs Stock: Trade-offs at a Glance
- Weight: The AT2 slip-on is significantly lighter than the stock muffler. You'll notice the difference when handling the bike. If shaving weight is a priority, the AT2 delivers a clear advantage.
- Sound: The AT2 gives a deeper, more aggressive tone than stock, but it's louder at full throttle. It's not a silent upgrade.
- Installation: The AT2 slip-on bolts directly to the stock header, so it's a straightforward swap. No need to modify the exhaust system. This makes it a weekend project for most riders.
- Cost: At a catalog price of USD 502.97 (compared to USD 689.00), the AT2 offers a solid value for the weight and sound improvements.
Product facts
- MT-10 22-26 AT2 Stainless Slip-On Exhaust, w/ Stainless Muffler: The AT2 uses a Works Finish AT2 muffler with a carbon fiber heel guard that complements the MT-10's design. The carbon fiber heel guard not only looks sharp but also helps with heat protection and durability.
MT-10 22-26 AT2 Stainless Slip-On Exhaust, w/ Stainless Muffler - MT-10 22-26 AT2 Stainless Slip-On Exhaust, w/ Stainless Muffler: The Street Series AT2 is available as a slip-on that works with the stock header. You get the weight and sound benefits without needing to replace the entire exhaust system, keeping installation simpler and cost lower.
Which one fits your ride?
Best for
- Riders who want a lighter, better-sounding MT-10 without a full exhaust system overhaul.
- Owners who prefer a deeper, more aggressive tone over the stock sound but still want a daily-rideable noise level.
Not for
- Riders who need maximum performance gains—consider a full race system instead.
- Those who must keep the bike as quiet as stock for noise-sensitive areas.
