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,Powersports ,BIKE FEATURES

Vital MX's 2019 Suzuki RM-Z450 Factory Bike Build

Recently, Vital MX set out to improve the 2019 RM-Z450 enough to run with the top 450 shootout bikes. Check out all the mods and equipment this Suzuki received, and what the..

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,VIDEOS ,Powersports ,Tech

How-To: 4-Stroke Piston Replacement

Recently you saw our introduction video telling you about our used 2006 YZ450F that we're rebuilding and documenting step-by-step. In this part 1 video, we'll go over tips on..

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,Powersports ,BIKE FEATURES

ProX CEO's KTM 250 SX-F Project Bike

ProX CEO Brian Reese and crew met the MXA magazine team at Club MX to ride his ProX-equipped KTM 250 SX-F project bike. Check out what went into this build and watch the MXA..

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,Powersports

Inner-Workings of a Dirt Bike: Custom ProX Cutaway Bike

ProX not only feels it important to offer affordable, high-quality performance parts, but they believe it's important for riders and racers to understand how the many moving..

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,VIDEOS ,Powersports ,BIKE FEATURES

MXA Rides a TM Racing MX300 Factory-Level Two-Stroke

Ralf Schmidt of TM Racing US built an MX300 two-stroke for the crew at Motocross Action to test--and they were impressed. Watch the bike in action and see all the factory..

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,FEATURES ,Powersports

Professional Jet Ski Pilot Luc Hermsen and his 1100cc Custom Race Ski

Luc Hermsen is a professional jet ski racer out of Europe. Here we take a look at how he got into this form of racing, and we get an in-depth look at his custom Bullett race..

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,VIDEOS ,Powersports ,ENGINE TECH ,Tech

YZ450F Top End Part 2: Rebuilding a Four-Stroke Head

In part 1 of our 2006 YZ450F rebuild, we walked you through how to replace the piston with a new ProX piston kit. After the new piston is installed and the cylinder is torqued..

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,Powersports ,BIKE FEATURES

Super-Mini: Mora Mechanical Racing's ProX KX85

Even though it's technically incorrect to call this a Supermini because the displacement remains at 85cc, this Kawasaki KX85 doesn't fall short in the race-ready department...

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,Powersports ,Tech

Standard MX vs. O-Ring: How To Choose the Proper Chain for your Bike

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,..

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,Powersports ,BIKE FEATURES

Bike Build: One of a Kind YZF290 Supermoto

We found a fellow racer on Facebook who had built a very impressive bike, and we had to know more about it. He was nice enough to set aside some time and give us information on..

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