---
title: Blog | ProX Racing Parts | Kevin Bailey
description: Subscribe to the ProX blog for the latest info on racing parts for dirt bikes, snowmobiles, karts, ATVs, Jetskis & other powersports racing equipment.
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---

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[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)

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[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) 

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Latest Posts

## Kevin Bailey

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[\[fa icon="facebook-square"\]Facebook](https://www.facebook.com/kbailey33?ref=bookmarks) [\[fa icon="linkedin-square"\]Linkedin](https://www.linkedin.com/in/kevin-bailey-64b2a8133/)

## Recent Posts

[![Rebuilding RZR Engines the Easy Way: Polaris 800 Rebuild Kits](https://blog.pro-x.com/hs-fs/hubfs/ProX/NEW%20PRODUCTS/RZR%20800%20Engine%20Kits/ProX_Polaris_800_Rebuild_Kit_Lead-2.webp?width=400&name=ProX_Polaris_800_Rebuild_Kit_Lead-2.webp "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)

,[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)

*ProX has expanded their ATV and UTV engine components lineup with reliable and convenient engine rebuild kits for Polaris 800 engines. Designed, developed, and tested..*

[READ MORE](https://blog.pro-x.com/rebuilding-rzr-engines-the-easy-way-polaris-800-rebuild-kits)

June 22, 2022  /  By [Kevin Bailey](https://blog.pro-x.com/author/kevin-bailey)

[![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)

[![Lightweight Design, Proven Durability | ProX Steel Sprockets](https://blog.pro-x.com/hs-fs/hubfs/ProX/NEW%20PRODUCTS/Ultralight%20Steel%20Sprockets/ProX%20Ultralight%20Social%20Lead.png?width=400&name=ProX%20Ultralight%20Social%20Lead.png "Lightweight Design, Proven Durability | ProX Steel Sprockets")](https://blog.pro-x.com/lightweight-design-proven-durability-prox-steel-sprockets)

,[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)

From cruising trails with buddies to serious off-road and on-track racing, ProX sprockets have delivered impressive durability, especially in steel construction. ProX steel rear..

[READ MORE](https://blog.pro-x.com/lightweight-design-proven-durability-prox-steel-sprockets)

September 22, 2021  /  By [Kevin Bailey](https://blog.pro-x.com/author/kevin-bailey)

[![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)

[![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)

[![Standard MX vs. O-Ring: How To Choose the Proper Chain for your Bike](https://blog.pro-x.com/hs-fs/hubfs/ProX/TECH/Chains/prox_mx_chain-11.jpg?width=400&name=prox_mx_chain-11.jpg "Standard MX vs. O-Ring: How To Choose the Proper Chain for your Bike")](https://blog.pro-x.com/mx-and-o-ring-chains-explained)

,[Powersports](https://blog.pro-x.com/topic/powersports) ,[Tech](https://blog.pro-x.com/topic/tech)

## [Standard MX vs. O-Ring: How To Choose the Proper Chain for your Bike](https://blog.pro-x.com/mx-and-o-ring-chains-explained)

*Chain drive systems have been transferring power to the rear of motorcycles for nearly a century. Here we take a look at the advantages of both standard MX and O-ring chains, and..*

[READ MORE](https://blog.pro-x.com/mx-and-o-ring-chains-explained)

May 11, 2020  /  By [Kevin Bailey](https://blog.pro-x.com/author/kevin-bailey)

[![Complete Lineup of Performance Replacement Parts for Sherco Motorcycles from ProX](https://blog.pro-x.com/hs-fs/hubfs/ProX/NEW%20PRODUCTS/Sherco/ProX_b2b.jpg?width=400&name=ProX_b2b.jpg "Complete Lineup of Performance Replacement Parts for Sherco Motorcycles from ProX")](https://blog.pro-x.com/complete-lineup-of-performance-replacement-parts-for-sherco-motorcycles-from-prox)

,[NEWS](https://blog.pro-x.com/topic/news) ,[NEW PRODUCTS](https://blog.pro-x.com/topic/new-products) ,[Powersports](https://blog.pro-x.com/topic/powersports) ,[BIKE FEATURES](https://blog.pro-x.com/topic/bike-features)

## [Complete Lineup of Performance Replacement Parts for Sherco Motorcycles from ProX](https://blog.pro-x.com/complete-lineup-of-performance-replacement-parts-for-sherco-motorcycles-from-prox)

With a broad arsenal of model offerings and an army of top off-road racers around the world, Sherco has built a well-respected name for themselves. Participating in and winning..

[READ MORE](https://blog.pro-x.com/complete-lineup-of-performance-replacement-parts-for-sherco-motorcycles-from-prox)

March 24, 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)

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

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