---
title: Blog | ProX Racing Parts | Maintenance
description: Maintenance | Subscribe to the ProX blog for the latest info on racing parts for dirt bikes, snowmobiles, karts, ATVs, Jetskis & other powersports racing equipment.
image: ?t=#keepProtocol
---

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[![Prox_logo_CMYK_Frame.png](https://blog.pro-x.com/hs-fs/hubfs/ProX/Prox_logo_CMYK_Frame.png?width=320&height=96&name=Prox_logo_CMYK_Frame.png "Prox_logo_CMYK_Frame.png")](https://blog.pro-x.com/)

,[NEWS](https://blog.pro-x.com/topic/news) ,[NEW PRODUCTS](https://blog.pro-x.com/topic/new-products) ,[VIDEOS](https://blog.pro-x.com/topic/videos) ,[UTV](https://blog.pro-x.com/topic/utv) 

[Rebuilding RZR Engines the Easy Way: Polaris 800 Rebuild Kits](https://blog.pro-x.com/rebuilding-rzr-engines-the-easy-way-polaris-800-rebuild-kits)

,[Maintenance](https://blog.pro-x.com/topic/maintenance) ,[Build Features](https://blog.pro-x.com/topic/build-features) 

[Yamaha YZ250FX Raced, Rebuilt & Raced Again](https://blog.pro-x.com/yamaha-yz250fx-engine-rebuild-with-prox-piston-and-rod)

,[FEATURES](https://blog.pro-x.com/topic/features) ,[Powersports](https://blog.pro-x.com/topic/powersports) ,[Maintenance](https://blog.pro-x.com/topic/maintenance) 

[ProX Parties with the Babes! | Babes in the Dirt 7](https://blog.pro-x.com/prox-parties-with-the-babes-babes-in-the-dirt-7)

,[Powersports](https://blog.pro-x.com/topic/powersports) ,[ENGINE TECH](https://blog.pro-x.com/topic/engine-tech) ,[Tech](https://blog.pro-x.com/topic/tech) ,[Maintenance](https://blog.pro-x.com/topic/maintenance) ,[How-To](https://blog.pro-x.com/topic/how-to) 

[Why Replacing your 4-Stroke Motorcycle's Cam Chain can Prevent Engine Failure](https://blog.pro-x.com/why-replacing-your-4-stroke-motorcycles-cam-chain-can-prevent-engine-failure)

,[NEWS](https://blog.pro-x.com/topic/news) ,[NEW PRODUCTS](https://blog.pro-x.com/topic/new-products) 

[Lightweight Design, Proven Durability | ProX Steel Sprockets](https://blog.pro-x.com/lightweight-design-proven-durability-prox-steel-sprockets)

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Latest Posts

[![Yamaha YZ250FX Raced, Rebuilt & Raced Again](https://blog.pro-x.com/hs-fs/hubfs/Lead%20Image-1.jpg?width=400&name=Lead%20Image-1.jpg "Yamaha YZ250FX Raced, Rebuilt & Raced Again")](https://blog.pro-x.com/yamaha-yz250fx-engine-rebuild-with-prox-piston-and-rod)

,[Maintenance](https://blog.pro-x.com/topic/maintenance) ,[Build Features](https://blog.pro-x.com/topic/build-features)

## [Yamaha YZ250FX Raced, Rebuilt & Raced Again](https://blog.pro-x.com/yamaha-yz250fx-engine-rebuild-with-prox-piston-and-rod)

*The crew over at Dirt Bike Test have ridden and raced their 2020 Yamaha YZ250FX hard in many endurance straining conditions, so when it came time for a complete engine rebuild,..*

[READ MORE](https://blog.pro-x.com/yamaha-yz250fx-engine-rebuild-with-prox-piston-and-rod)

June 13, 2022  /  By [Kevin Bailey](https://blog.pro-x.com/author/kevin-bailey)

[![ProX Parties with the Babes! | Babes in the Dirt 7](https://blog.pro-x.com/hs-fs/hubfs/ProX/Events/2022%20Babes%20in%20the%20Dirt/BITD2022-GABEDILLA-352.jpg?width=400&name=BITD2022-GABEDILLA-352.jpg "ProX Parties with the Babes! | Babes in the Dirt 7")](https://blog.pro-x.com/prox-parties-with-the-babes-babes-in-the-dirt-7)

,[FEATURES](https://blog.pro-x.com/topic/features) ,[Powersports](https://blog.pro-x.com/topic/powersports) ,[Maintenance](https://blog.pro-x.com/topic/maintenance)

## [ProX Parties with the Babes! | Babes in the Dirt 7](https://blog.pro-x.com/prox-parties-with-the-babes-babes-in-the-dirt-7)

The annual ladies-only campout at Hungry Valley SVRA in the hills of California did not disappoint! The ProX crew spent the weekend sharing moto maintenance knowledge, riding the..

[READ MORE](https://blog.pro-x.com/prox-parties-with-the-babes-babes-in-the-dirt-7)

May 12, 2022  /  By [Kevin Bailey](https://blog.pro-x.com/author/kevin-bailey)

[![Why Replacing your 4-Stroke Motorcycle's Cam Chain can Prevent Engine Failure](https://blog.pro-x.com/hs-fs/hubfs/ProX/TECH/Cam%20Chain/ProX%20Cam%20Chain%209.png?width=400&name=ProX%20Cam%20Chain%209.png "Why Replacing your 4-Stroke Motorcycle's Cam Chain can Prevent Engine Failure")](https://blog.pro-x.com/why-replacing-your-4-stroke-motorcycles-cam-chain-can-prevent-engine-failure)

,[Powersports](https://blog.pro-x.com/topic/powersports) ,[ENGINE TECH](https://blog.pro-x.com/topic/engine-tech) ,[Tech](https://blog.pro-x.com/topic/tech) ,[Maintenance](https://blog.pro-x.com/topic/maintenance) ,[How-To](https://blog.pro-x.com/topic/how-to)

## [Why Replacing your 4-Stroke Motorcycle's Cam Chain can Prevent Engine Failure](https://blog.pro-x.com/why-replacing-your-4-stroke-motorcycles-cam-chain-can-prevent-engine-failure)

Have you ever thought about the importance of your four-stroke engine’s cam chain – also referred to as a timing chain – and what would happen if it broke? The cam chain is one of..

[READ MORE](https://blog.pro-x.com/why-replacing-your-4-stroke-motorcycles-cam-chain-can-prevent-engine-failure)

February 11, 2022  /  By [Paul Olesen](https://blog.pro-x.com/author/paul-olesen)

[![Quick and Affordable Refresh for an RM125 Two-Stroke](https://blog.pro-x.com/hs-fs/hubfs/ProX/Bike%20Features/Alex%20RM125/RM125%20ProX%20Lead.jpg?width=400&name=RM125%20ProX%20Lead.jpg "Quick and Affordable Refresh for an RM125 Two-Stroke")](https://blog.pro-x.com/affordable-refresh-for-rm125-two-stroke)

,[Powersports](https://blog.pro-x.com/topic/powersports) ,[BIKE FEATURES](https://blog.pro-x.com/topic/bike-features) ,[Maintenance](https://blog.pro-x.com/topic/maintenance) ,[2-Stroke](https://blog.pro-x.com/topic/2-stroke)

## [Quick and Affordable Refresh for an RM125 Two-Stroke](https://blog.pro-x.com/affordable-refresh-for-rm125-two-stroke)

*Part of our own ProX technical sales team, Alex Rossborough recently acquired a 2004 Suzuki RM125. It seemed the previous owner had taken decent care of it , but there were still..*

[READ MORE](https://blog.pro-x.com/affordable-refresh-for-rm125-two-stroke)

July 13, 2021  /  By [Kevin Bailey](https://blog.pro-x.com/author/kevin-bailey)

[![How to Replace Dirt Bike Shock Linkage Bearings](https://blog.pro-x.com/hs-fs/hubfs/ProX/TECH/Linkage%20Bearings/ProX_motorcycle_linkage_bearings-17.jpg?width=400&name=ProX_motorcycle_linkage_bearings-17.jpg "How to Replace Dirt Bike Shock Linkage Bearings")](https://blog.pro-x.com/how-to-replace-dirt-bike-shock-linkage-bearings)

,[Powersports](https://blog.pro-x.com/topic/powersports) ,[Tech](https://blog.pro-x.com/topic/tech) ,[Maintenance](https://blog.pro-x.com/topic/maintenance) ,[How-To](https://blog.pro-x.com/topic/how-to)

## [How to Replace Dirt Bike Shock Linkage Bearings](https://blog.pro-x.com/how-to-replace-dirt-bike-shock-linkage-bearings)

*We walk you through replacing bearings in a motorcycle shock linkage.*

[READ MORE](https://blog.pro-x.com/how-to-replace-dirt-bike-shock-linkage-bearings)

April 30, 2021  /  By [Kevin Bailey, Paul Olesen](https://blog.pro-x.com/author/kevin-bailey-paul-olesen)

[![ProX Goes Electric: Support for KTM E-Motorcycles](https://blog.pro-x.com/hs-fs/hubfs/ProX/NEW%20PRODUCTS/Electric/ProX%20Electric%20Lead.jpg?width=400&name=ProX%20Electric%20Lead.jpg "ProX Goes Electric: Support for KTM E-Motorcycles")](https://blog.pro-x.com/prox-goes-electric-support-for-electric-ktm-motorcycles)

,[NEW PRODUCTS](https://blog.pro-x.com/topic/new-products) ,[Maintenance](https://blog.pro-x.com/topic/maintenance)

## [ProX Goes Electric: Support for KTM E-Motorcycles](https://blog.pro-x.com/prox-goes-electric-support-for-electric-ktm-motorcycles)

A new, innovative era is emerging in the powersports industry, and the KTM group has been leading the charge in off-road motorcycles, supporting young riders with fully electric..

[READ MORE](https://blog.pro-x.com/prox-goes-electric-support-for-electric-ktm-motorcycles)

October 22, 2020  /  By [Kevin Bailey](https://blog.pro-x.com/author/kevin-bailey)

[![Honda CRF450X Complete Engine Rebuild Video Guide | ProX](https://blog.pro-x.com/hs-fs/hubfs/Prox20_CRF450X_rebuild_graphic_2.jpg?width=400&name=Prox20_CRF450X_rebuild_graphic_2.jpg "Honda CRF450X Complete Engine Rebuild Video Guide | ProX")](https://blog.pro-x.com/honda-crf450x-complete-engine-rebuild-video-guide-prox)

,[Powersports](https://blog.pro-x.com/topic/powersports) ,[ENGINE TECH](https://blog.pro-x.com/topic/engine-tech) ,[Tech](https://blog.pro-x.com/topic/tech) ,[Maintenance](https://blog.pro-x.com/topic/maintenance) ,[How-To](https://blog.pro-x.com/topic/how-to)

## [Honda CRF450X Complete Engine Rebuild Video Guide | ProX](https://blog.pro-x.com/honda-crf450x-complete-engine-rebuild-video-guide-prox)

*We brought a well-used Honda CRF450X engine into the shop for a complete teardown and rebuild, top to bottom-end. We documented this engine rebuild every step of the way,..*

[READ MORE](https://blog.pro-x.com/honda-crf450x-complete-engine-rebuild-video-guide-prox)

June 9, 2020  /  By [Kevin Bailey](https://blog.pro-x.com/author/kevin-bailey)

[![How To Rebuild a 4-Stroke Top End in your Dirt Bike or ATV](https://blog.pro-x.com/hs-fs/hubfs/ProX/TECH/YZ450F%20Piston%20Replacement/JE7_8499-1.jpg?width=400&name=JE7_8499-1.jpg "How To Rebuild a 4-Stroke Top End in your Dirt Bike or ATV")](https://blog.pro-x.com/how-to-rebuild-a-4-stroke-top-end-in-your-dirt-bike-or-atv)

,[Powersports](https://blog.pro-x.com/topic/powersports) ,[ENGINE TECH](https://blog.pro-x.com/topic/engine-tech) ,[Tech](https://blog.pro-x.com/topic/tech) ,[Maintenance](https://blog.pro-x.com/topic/maintenance) ,[How-To](https://blog.pro-x.com/topic/how-to)

## [How To Rebuild a 4-Stroke Top End in your Dirt Bike or ATV](https://blog.pro-x.com/how-to-rebuild-a-4-stroke-top-end-in-your-dirt-bike-or-atv)

*ProX takes you through the major parts of rebuilding a 4-stroke top end complete with step-by-step guides for each task along the way!*

[READ MORE](https://blog.pro-x.com/how-to-rebuild-a-4-stroke-top-end-in-your-dirt-bike-or-atv)

March 15, 2020  /  By [Kevin Bailey](https://blog.pro-x.com/author/kevin-bailey)

[![How To Replace the Countershaft Sprocket and Rear Sprocket on your Dirt Bike](https://blog.pro-x.com/hs-fs/hubfs/Wiseco/BIKE%20FEATURES/Husqvarna%20FX450/kevin_husky_fx_450-21.jpg?width=400&name=kevin_husky_fx_450-21.jpg "How To Replace the Countershaft Sprocket and Rear Sprocket on your Dirt Bike")](https://blog.pro-x.com/how-to-replace-the-countershaft-sprocket-and-rear-sprocket-on-your-dirt-bike)

,[Tech](https://blog.pro-x.com/topic/tech) ,[Maintenance](https://blog.pro-x.com/topic/maintenance) ,[How-To](https://blog.pro-x.com/topic/how-to)

## [How To Replace the Countershaft Sprocket and Rear Sprocket on your Dirt Bike](https://blog.pro-x.com/how-to-replace-the-countershaft-sprocket-and-rear-sprocket-on-your-dirt-bike)

*Follow along through our guide of tips and tricks on replacing the front and rear sprockets on your dirt bike.*

[READ MORE](https://blog.pro-x.com/how-to-replace-the-countershaft-sprocket-and-rear-sprocket-on-your-dirt-bike)

March 12, 2020  /  By [Paul Olesen](https://blog.pro-x.com/author/paul-olesen)

[![Step-by-Step Guide to Replacing Fork Seals in your Dirt Bike](https://blog.pro-x.com/hs-fs/hubfs/ProX/TECH/Replacing%20Fork%20Seals/prox-fork-seal-replacement-51.jpg?t=1475023575990&width=400&name=prox-fork-seal-replacement-51.jpg "Step-by-Step Guide to Replacing Fork Seals in your Dirt Bike")](https://blog.pro-x.com/step-by-step-guide-to-replacing-fork-seals-in-your-dirt-bike)

,[Powersports](https://blog.pro-x.com/topic/powersports) ,[Maintenance](https://blog.pro-x.com/topic/maintenance) ,[How-To](https://blog.pro-x.com/topic/how-to)

## [Step-by-Step Guide to Replacing Fork Seals in your Dirt Bike](https://blog.pro-x.com/step-by-step-guide-to-replacing-fork-seals-in-your-dirt-bike)

*Leaky fork seals may be seem like minor problem, but it can lead to further damage of your fork internals, and even handling and braking safety. In this guide, we go through each..*

[READ MORE](https://blog.pro-x.com/step-by-step-guide-to-replacing-fork-seals-in-your-dirt-bike)

February 25, 2020  /  By [Alex Witham](https://blog.pro-x.com/author/alex-witham)

[All posts](https://blog.pro-x.com/all) [Next \[fa icon="angle-double-right"\]](https://blog.pro-x.com/topic/maintenance/page/2)

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### MOST POPULAR

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[featured](https://blog.pro-x.com/topic/featured) [Powersports](https://blog.pro-x.com/topic/powersports) [Tech](https://blog.pro-x.com/topic/tech) [Maintenance](https://blog.pro-x.com/topic/maintenance) [How-To](https://blog.pro-x.com/topic/how-to)

[12 Tips to Help Keep Your 2-Stroke Running Strong](https://blog.pro-x.com/12-tips-to-keep-your-2-stroke-running)

[featured](https://blog.pro-x.com/topic/featured) [Powersports](https://blog.pro-x.com/topic/powersports) [Maintenance](https://blog.pro-x.com/topic/maintenance) [How-To](https://blog.pro-x.com/topic/how-to)

[Step-by-Step Guide to Replacing Fork Seals in your Dirt Bike](https://blog.pro-x.com/step-by-step-guide-to-replacing-fork-seals-in-your-dirt-bike)

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