Yoshimura · R-11 · Slip-On
The Yoshimura R-11 Street Series Exhaust System is a stainless slip-on designed for riders looking to sharpen the character of the GSR750 2011-16 and GSX-S750 17-23.
Yoshimura reports measurable gains at key rpm points, and the R-11 is engineered to deliver the brand’s signature exhaust note. With development and manufacturing in Japan, this Street Series system is aimed at riders who want a refined, performance-focused upgrade without moving to a full exhaust.
Materials
This R-11 Street Series system is a stainless slip-on exhaust, offering a focused upgrade to the muffler side of the bike while keeping installation straightforward. Its R-11 series configuration is built to enhance the overall riding experience with a purposeful aftermarket look and feel.
Engineering
Yoshimura lists the stock system at 9.9 lbs. and the Yoshimura R-11 stainless at 5.5 lbs., helping reduce weight from the original unit. That drop is aimed at giving the bike a lighter, more responsive feel while maintaining the durability associated with stainless construction.
Performance
Performance is supported by manufacturer-verified claims and the dyno chart shown on the page. Yoshimura reports up to 3.8% more HP @10,000 rpm and up to 5.4% torque @7,500 rpm, targeting stronger pull where these engines spend time under load.
Performance
Yoshimura positions the R-11 as a Street Series Exhaust System created to improve the overall experience of the GSR750 2011-16 and GSX-S750 17-23 platform. As a slip-on, it’s designed to bring a sharper personality through reduced system weight and manufacturer-reported performance gains, while keeping the upgrade centered on the muffler assembly rather than a full exhaust replacement.
Sound
The R-11 is backed by Yoshimura’s published performance claims and the dyno chart available on the product page. Yoshimura reports up to 3.8% more HP @10,000 rpm and up to 5.4% torque @7,500 rpm. Sound levels are provided using J2825 standards, with readings listed at 2000 rpm and 5000 rpm for both stock and the R-11, helping riders understand how the sound profile changes with this slip-on.
Development
Yoshimura states the R-11 is designed, developed and manufactured in Japan. That origin reflects the brand’s established approach to street-focused exhaust development, combining a distinctive R-11 series presentation with the stainless material specification listed in the product details for riders who want a purpose-built slip-on from Yoshimura.
Figures as reported by Yoshimura.
| Part Number | 1U0-158-5E50 |
|---|---|
| Brand | Yoshimura |
| Product Line | Street Series Exhaust System |
| Series | R-11 |
| System Type | Slip-On |
| Material | Stainless |
| Shipping Weight | 9 lb |
| Emissions Compliance | QUALIFIED MANUFACTURER DECLARED "REPLACEMENT PART" |
| Part Number | Type | Included With This System |
|---|---|---|
| INS-YJP-04-K | Sound Insert | No |
Installation Instructions (PDF)
Provided by Yoshimura. Opens in a new tab.
