VALVE EXHAUST STEEL KTM 450/500 EXC 20-25, PROX 28.6420-1
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
Steel Hi-Performance Racing Exhaust Valve. Manufactured to exacting standards for total confidence. Meets or exceeds OEM quality. Direct OEM replacement. PROX products are a high quality replacement part and carries our guarantee of your satisfaction.
- SKU
- 65-5128.PX.SS
- Brand
- Pro-X Racing
- Availability
- In Stock (4)
Fitments (28)
| Make | Model | Year |
|---|---|---|
| GAS-GAS | EC F 450 | 2024 |
| GAS-GAS | EC F 450 | 2025 |
| GAS-GAS | EC F 500 | 2024 |
| GAS-GAS | EC F 500 | 2025 |
| HUSQVARNA | FE 450 | 2020 |
| HUSQVARNA | FE 450 | 2021 |
| HUSQVARNA | FE 450 | 2022 |
| HUSQVARNA | FE 450 | 2023 |
| HUSQVARNA | FE 450 | 2024 |
| HUSQVARNA | FE 450 | 2025 |
| HUSQVARNA | FE 501 | 2020 |
| HUSQVARNA | FE 501 | 2021 |
| HUSQVARNA | FE 501 | 2022 |
| HUSQVARNA | FE 501 | 2023 |
| HUSQVARNA | FE 501 | 2024 |
| HUSQVARNA | FE 501 | 2025 |
| KTM | 450 EXC-F | 2020 |
| KTM | 450 EXC-F | 2021 |
| KTM | 450 EXC-F | 2022 |
| KTM | 450 EXC-F | 2023 |
| KTM | 450 EXC-F | 2024 |
| KTM | 450 EXC-F | 2025 |
| KTM | 500 EXC-F | 2020 |
| KTM | 500 EXC-F | 2021 |
| KTM | 500 EXC-F | 2022 |
| KTM | 500 EXC-F | 2023 |
| KTM | 500 EXC-F | 2024 |
| KTM | 500 EXC-F | 2025 |
- General Product Group
- Cam & Valvetrain
- General Product Type
- Valve - Exhaust
- Variant Id
- 300254
FULL DESCRIPTION
ProX Steel Hi-Performance Racing Exhaust Valve
This ProX Steel Hi-Performance Racing Exhaust Valve is engineered for superior performance and reliability. Manufactured to exacting standards, it meets or exceeds OEM quality, providing total confidence for your motorcycle.
Key Features:
- High-performance steel construction for durability.
- Designed as a direct OEM replacement part.
- Meets or exceeds original equipment manufacturer quality standards.
- Offers exceptional value for money.
- Backed by ProX's guarantee of satisfaction.
Ensure optimal performance and longevity for your motorcycle's exhaust system with this premium quality ProX valve.
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.