VALVE EXHAUST XT TT-R225, PROX 28.2396-1 5HO-12121-00
4.1 Trustpilot 99.9% positive on eBay
UK delivery £4.99, free over £60 2–4 business days
Spread the cost with 
18+, T&Cs apply
PROX Exhaust Valve. Stainless steel construction. Head diameter: 28.50mm, Stem diameter: 6.00mm, Stem length: 92.55mm. Part number 28.2396-1. Replaces OEM part 5HO-12121-00.
- SKU
- 65-138.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (3)
Fitments (108)
| Make | Model | Year |
|---|---|---|
| YAMAHA | TT 225R | 1999 |
| YAMAHA | TT 225R | 2000 |
| YAMAHA | TT 225R | 2001 |
| YAMAHA | TT 225R | 2002 |
| YAMAHA | TT 225R | 2003 |
| YAMAHA | TT 225R | 2004 |
| YAMAHA | TT 225R | 2005 |
| YAMAHA | TT 225R | 2006 |
| YAMAHA | TT 225R | 2007 |
| YAMAHA | TT 230R | 1999 |
| YAMAHA | TT 230R | 2000 |
| YAMAHA | TT 230R | 2001 |
| YAMAHA | TT 230R | 2002 |
| YAMAHA | TT 230R | 2003 |
| YAMAHA | TT 230R | 2004 |
| YAMAHA | TT 230R | 2005 |
| YAMAHA | TT 230R | 2006 |
| YAMAHA | TT 230R | 2007 |
| YAMAHA | TT-R 225 | 1999 |
| YAMAHA | TT-R 225 | 2000 |
| YAMAHA | TT-R 225 | 2001 |
| YAMAHA | TT-R 225 | 2002 |
| YAMAHA | TT-R 225 | 2003 |
| YAMAHA | TT-R 225 | 2004 |
| YAMAHA | TT-R 230 | 2005 |
| YAMAHA | TT-R 230 | 2006 |
| YAMAHA | TT-R 230 | 2007 |
| YAMAHA | TT-R 230 | 2008 |
| YAMAHA | TT-R 230 | 2009 |
| YAMAHA | TT-R 230 | 2010 |
| YAMAHA | TT-R 230 | 2011 |
| YAMAHA | TT-R 230 | 2012 |
| YAMAHA | TT-R 230 | 2013 |
| YAMAHA | TT-R 230 | 2014 |
| YAMAHA | TT-R 230 | 2015 |
| YAMAHA | TT-R 230 | 2016 |
| YAMAHA | TT-R 230 | 2017 |
| YAMAHA | TT-R 230 | 2018 |
| YAMAHA | TT-R 230 | 2019 |
| YAMAHA | TT-R 230 | 2020 |
| YAMAHA | TTR 230 | 2021 |
| YAMAHA | TTR 230 | 2022 |
| YAMAHA | TTR 230 | 2023 |
| YAMAHA | TTR 230 | 2024 |
| YAMAHA | TTR 230 | 2025 |
| YAMAHA | XT 225 | 1992 |
| YAMAHA | XT 225 | 1993 |
| YAMAHA | XT 225 | 1994 |
| YAMAHA | XT 225 | 1995 |
| YAMAHA | XT 225 | 1996 |
| YAMAHA | XT 225 | 1997 |
| YAMAHA | XT 225 | 1998 |
| YAMAHA | Y P MAJESTY 250 | 1998 |
| YAMAHA | Y P MAJESTY 250 | 1999 |
| YAMAHA | Y P MAJESTY 250 | 2000 |
| YAMAHA | Y P MAJESTY 250 | 2001 |
| YAMAHA | Y P MAJESTY 250 | 2002 |
| YAMAHA | Y P MAJESTY 250 | 2003 |
| YAMAHA | YFB TIMBERWOLF 250 | 1992 |
| YAMAHA | YFB TIMBERWOLF 250 | 1993 |
| YAMAHA | YFB TIMBERWOLF 250 | 1994 |
| YAMAHA | YFB TIMBERWOLF 250 | 1995 |
| YAMAHA | YFB TIMBERWOLF 250 | 1996 |
| YAMAHA | YFB TIMBERWOLF 250 | 1997 |
| YAMAHA | YFB TIMBERWOLF 250 | 1998 |
| YAMAHA | YFB TIMBERWOLF 250 | 1999 |
| YAMAHA | YFB TIMBERWOLF 250 | 2000 |
| YAMAHA | YFM 200 | 1983 |
| YAMAHA | YFM 200 | 1984 |
| YAMAHA | YFM 200 | 1985 |
| YAMAHA | YFM 200 | 1986 |
| YAMAHA | YFM 200 | 1987 |
| YAMAHA | YFM 200 | 1988 |
| YAMAHA | YFM 200 | 1989 |
| YAMAHA | YFM 225 | 1986 |
| YAMAHA | YFM 225 | 1987 |
| YAMAHA | YFM 225 | 1988 |
| YAMAHA | YFM 250 | 1989 |
| YAMAHA | YFM 250 | 1990 |
| YAMAHA | YFM 250 | 1991 |
| YAMAHA | YFM BEAR TRACKER 250 | 1999 |
| YAMAHA | YFM BEAR TRACKER 250 | 2000 |
| YAMAHA | YFM BEAR TRACKER 250 | 2001 |
| YAMAHA | YFM BEAR TRACKER 250 | 2002 |
| YAMAHA | YFM BEAR TRACKER 250 | 2003 |
| YAMAHA | YFM BEAR TRACKER 250 | 2004 |
| YAMAHA | YFM BIG BEAR 250 | 2007 |
| YAMAHA | YFM BIG BEAR 250 | 2008 |
| YAMAHA | YFM BIG BEAR 250 | 2009 |
| YAMAHA | YFM BRUIN 250 | 2005 |
| YAMAHA | YFM BRUIN 250 | 2006 |
| YAMAHA | YFM R RAPTOR 250 | 2008 |
| YAMAHA | YFM R RAPTOR 250 | 2009 |
| YAMAHA | YFM R RAPTOR 250 | 2010 |
| YAMAHA | YFM R RAPTOR 250 | 2011 |
| YAMAHA | YFM R RAPTOR 250 | 2012 |
| YAMAHA | YFM R RAPTOR 250 | 2013 |
| YAMAHA | YFM RAPTOR 250 | 2008 |
| YAMAHA | YFM RAPTOR 250 | 2009 |
| YAMAHA | YFM RAPTOR 250 | 2010 |
| YAMAHA | YFM RAPTOR 250 | 2011 |
| YAMAHA | YFM RAPTOR 250 | 2012 |
| YAMAHA | YFM RAPTOR 250 | 2013 |
| YAMAHA | YFU1W PRO HAULER 4 ALL | 1989 |
| YAMAHA | YTM 225 | 1983 |
| YAMAHA | YTM 225 | 1984 |
| YAMAHA | YTM 225 | 1985 |
| YAMAHA | YTM 225 | 1986 |
- General Product Group
- Cam & Valvetrain
- General Product Type
- Valve - Exhaust
- Variant Id
- 263455
FULL DESCRIPTION
Pro-X High Performance Stainless Steel Exhaust Valve
Upgrade your engine's performance with this high-performance stainless steel exhaust valve from Pro-X. Engineered for durability and superior function, this valve is a direct replacement designed to meet or exceed Original Equipment (OE) specifications.
Key Features:
- Material: Premium grade stainless steel for exceptional strength and heat resistance.
- Construction: Manufactured to exact OEM specifications and tolerances, ensuring a perfect fit and reliable operation.
- Performance: Designed for high-performance applications, offering improved exhaust flow and engine efficiency.
- Dimensions: Head Diameter: 28.50mm, Stem Diameter: 6.00mm, Stem Length: 92.55mm.
This Pro-X exhaust valve provides a cost-effective solution for maintaining or enhancing your engine's reliability and performance.
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.