Sprint Car DMI XR-1 Quick Change Components

Quick change rears have been around since the 1940s and while many are familiar with them, to others they’re a mystery we’ll help explain

This article demonstrates how to install a complete Winters quick change kit with additional parts including birdcages, brackets, and calipers for a modified race car.

Tim talks about our Winters quick change rear end & components.

We help determine what are the best 10-spline quick change gear ratios for your street or racing needs

How to determine the quick change R&P ratio without opening up the rear in street cars with quick changes, sprint cars, modifieds, late models and GOTRA cars.

Learn a few tips on how to properly mount Modified bodies and some products that will help get your race car body fabrication job done!

Learn what goes into setting the fuel for your engine and how to change the density altitude, ADR, main pill and high speed pressure to optimize a/f ratio.

Learn how to assemble a rear axle assembly as we put together ours for the 410 Sprint Car Build. Our team of builders continues to make progress on the car!

A routine weekly maintenance checklist to perform between each race in order to keep a clean and efficient race car at the track.

Little is thought of your engine’s starter until it refuses to turn your engine over at the worst possible moment. Today’s powerful mini starters can crank the biggest engines with ease. Learn how in our buyer’s guide.