Yoshimura RS-12 Full Exhaust System S.Steel CRF450R 21-24
Yoshimura RS-12 Full Exhaust System S.Steel CRF450R 21-24
Part no. 225850S321
The Yoshimura RS-12 Full Exhaust System S.Steel CRF450R 21-24 from Yoshimura is listed to fit 1 model: Honda CRF 450 R (CRF450R) 2021-2024. It is part of our exhaust full system range.
- Part number: 225850S321
- Fits Honda: CRF 450 R (CRF450R) 2021-2024
- Category: Engine Parts › Exhaust › Exhaust Full System
Specifications
| Brand | Yoshimura |
|---|---|
| Manufacturer Item No. | 225850S321 |
Fits these bikes
This Yoshimura part is listed as fitting 1 model. Check your model and year below.
| Make | Model | Years |
|---|---|---|
| Honda | CRF 450 R (CRF450R) | 2021-2024 |
Product details
Yoshimura rates this as the number one exhaust in Supercross and Motocross. Chase Sexton rode it to the 2023 450 Supercross title. Jett Lawrence also used it to claim the 2023 450 Motocross SMX title as part of a perfect season.
This latest RS-12 system in stainless steel is built for the Honda CRF450R/RX. With the newest engine spec, Yoshimura's engineers wanted to extract the most usable power they could, so they created a completely new system rather than carrying the old one over. At its heart is a one-piece cast stainless steel manifold with an integrated bolt flange surface, 3x stronger than conventional designs.
The system was developed alongside, and is the closest thing to, the exhausts that 5x World Champion Tim Gajser, Chase Sexton and Jett Lawrence have used to take holeshots and win championships. The resonator inside the RS-12 silencer has grown by 50cc, a 14% increase, and a second resonator has been added to the header. Together these changes unlock a large gain in usable power.
On the latest engine spec, which has a smaller throttle body and revised ECU settings, the RS-12 adds 5% maximum horsepower and 6.5% maximum torque.
What it means on the bike
- Easier power delivery
- Smoother frontside torque
- You can ride a gear higher, which frees up the suspension
- Less fatigue for the rider
Questions about this part
Will the Yoshimura RS-12 Full Exhaust System S.Steel CRF450R 21-24 fit my bike?
It is listed for 1 model, including Honda CRF 450 R (2021-2024). The full list is in the "Fits these bikes" table on this page, and the fit check next to the price tells you straight away for your saved bike.
What is the part number?
The manufacturer part number is 225850S321. Our stock code is 800328.
How much is delivery?
Order before 3pm for same day dispatch. UK Next Day delivery is £7.99, and free on orders of £100 or more. Pre 12:00 (£9.99) and Pre 10:00 (£14.99) upgrades are charged at any order value.
Can I return it?
Yes. You can return it within 30 days of delivery for a refund. You pay the return postage unless the item is faulty, damaged or wrong, in which case we cover it. See our Returns page for how. Returns