Yoshimura
Yoshimura KX250/X 2025 RS-12 Stainless Full Exhaust, w/ Stainless Muffler
Exhaust - 2 StrokeSKU YO-242950S520
Cheapest we found
$1,775.95
at XPERT Moto Gear
3 recent in-stock prices · spread $33.53 (2%)
Based only on in-stock prices checked in the last 30 days. 4 stores checked; dates for every store are shown below.
Recorded store prices
Prices we recorded when we last checked each store for this exact variant.
Product details
Yoshimura KX250/X 2025 RS-12 Stainless Full Exhaust, W/ Stainless Muffler
The newest version of the Kawasaki KX250F is here, and Yoshimura has an RS-12 Signature Series full system exhaust to help boost the new green machine right up onto the podium! Just like Nick DeFeo as it helped bring him the 2025 NEPG Pro 2 Championship!
The latest KX250F boasts a new chassis and engine package. That meant it was time to go to work to see what can be done to add performance to the new KX. During development the new 250 was very responsive to our RS-12. We were able to add up to 3.3% more HP at 11,000 rpm and up to 3.4% more torque at 10,600 rpm. This gives the 2025 KX250F added power on top and more connectivity on the bottom and mid point of the power spectrum.
Our new RS-12 for the 2025 KX250F comes with an INS-31-K sound insert installed. This insert not only produces an ear pleasing exhaust note, it also makes the best power for the new Kawasaki. Also available separately is an SA-21-K spark arrestor when venturing out into the woods is your jam.
Some of the features of the new RS-12 include:
- Carbon Faced Machined Joint: Our new Carbon Faced Machined Joint no longer requires the use of anti-seize. This is accomplished by impregnating the surface of the stainless steel joint with carbon atoms. The result is a reduction in wear over the life of the joint by reducing friction.
- Header Resonator: Our header resonator isn't just there for looks, it allows us to maximize power across the spectrum, while enhancing rider connectivity.
- Repack Kits, optional Inserts and Spark Arresters are available for all models
Proudly designed, developed and made in the USA!
This product was designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and aftermarket accessories not found on a bike as delivered from the factory may not be compatible with this product.
Attention international customers: This product was designed and tested to be compatible with vehicles in the U.S. marketplace only. Compatibility, including fitment and performance, may vary by marketplace.
Fitment:
- Kawasaki KX250F 2025
- Kawasaki KX250X 2025
Price history
Recorded changes for this exact variant.
Step chart of dated store-price observations. Solid lines show confirmed crawl coverage, dashed lines show overdue missed-check spans, and every line stops at the last confirmed price.
- 1XPERT Moto Gear5 points · last checked 23 Aug 2026
- 2MotoHeaven3 points · last checked 21 Aug 2026
- 3Superbike Supply3 points · last checked 21 Aug 2026
- 4Highside Shop1 point · last checked 8 Aug 2026
Solid steps show periods confirmed by the store’s change-only price history and completed crawl record: if the price had changed at a check, another point would appear. Dashed steps show overdue periods with no completed crawl confirmation. Every line stops at that listing’s last confirmed check and is never extended to today. Prices are not live and may have changed since the last point shown.
How we collect and compare prices