540 Danforth Street
Coopersville, MI 49404


*For estimated shipping times click below:


Toll-Free: 1-800-472-2464
Fax: 1-800-441-6875

HOURS (Eastern Time)
Monday-Thursday: 8:00am - 5:30pm
Friday: 8:00am - 5:00pm

RapidSSL Certificate

Our commitment to racing is reflected in the wide range of innovative and cutting edge products we develop and manufacture for the racing industry. We pride ourselves on looking forward, while continuously upgrading and maintaining our current product lines.

Our spacious location in Coopersville, MI gives us the advantage of housing all of our operations, (Keyser Manufacturing, Keyser's Port City Racing, Integra Shocks and Springs, OMI ATV Products, Keyser's Pro Blend, and Demo Derby Masters), under one roof ... allowing us to increase our efficiency, improve customer service, and ensure that we have ample room to expand. Keyser Manufacturing is housed in a 140,000 square foot building containing our sales, showroom, manufacturing, warehouse, and distribution centers.

Our knowledgeable sales staff is only a phone call away to talk you through the ordering process and answer any questions you may have either on the phone or one-on-one at the sales counter.

We ship products to racers all over the world including Canada, Mexico, The United Kingdom, New Zealand, Australia, Africa, and the Netherlands. We dream it, draw it, build it, test it, and ship it right to your door. We're your total solution race car provider. We warehouse over 100 different brands of racing products.

From lugnuts to bodies, and 12,000 parts in between, we're Keyser's Port City Racing!

For technical advice, walk in or call 1-800-472-2464 to speak with one of our knowledgeable sales team.

Mark Disch
Heather Luker
Jason King
Henry Presta

We do more than just race car parts! We are also a full service machine and fabrication shop featuring:

  • Excellent welding and sheet metal work
  • Custom metal fabrication
  • Precise machining
  • Mig, tig, and robotic welding
  • In-house engineering and design
  • Small parts assembly
  • Waterjet cutting - CNC machining - Turret stamping
  • Rolling and forming - Welding - Development
  • Powder Coating - Laser Cutting

We create specialty fabrications for a variety of industries. From concept to full production, and everything in between, we can do that...we're Keyser Manufacturing!

We sell more than just shocks and springs! At Integra, we bring years of racing knowledge to the products we sell and give our customers the inside track on what it takes to improve their racing program. We are at the track with our dyno truck and helpful advice right when you need it. Our constant pledge to keep you on the cutting edge of racing technology is exhibited in the wide range of innovative shocks and springs that we offer.

  • IDA shocks
  • Remote canister shocks
  • Aluminum small body twin tube
  • Aluminum mono tube
  • Aluminum base valve
  • Aluminum single adjustable
  • Steel mono tube with Schrader valve
  • Steel mono tube Non-Schrader valve
  • Steel base valve
  • Steel IDA Shocks
  • Steel single adjustable
  • The Avenger steel monotube
  • Steel twin tube rebuildable
  • Steel twin tube fixed bearing non-rebuildable
  • MX springs
  • Standard coil over springs
  • Conventional front and rear springs
  • Full line of shock and spring accessories

Why not choose the shock and spring manufacturer that has produced countless winners and champions year after year? Integra Shocks and Springs!

OMI specializes in quality aftermarket ATV parts and accessories. ATVs are designed to be tough, but even the best made ride occasionally needs routine maintenance, an upgrade or a replacement part. OMI offers a great selection of products created to keep up with those hard driving off-road track or trail adventures.

  • Handlebars, grips and risers
  • A-Arm sets (Honda and Yamaha)
  • Clutches & clutch covers
  • ATV tie rods and tie rod ends (Honda & Yamaha)
  • Steering stems and stem mounts

For aftermarket ATV parts and accessories shop ... OMI ATV Products!

Established in 1981, Pro-Blend provides lubricating and cooling products to circle track, drag racing, motorcycles, marine, machine shop, industrial and outdoor power equipment. Anything that has moving metal parts, we can make run better, faster, cooler.




Demo Derby Masters is the premier destination for demolition derby drivers and car builders. We offer a wide array of stock demolition derby parts and accessories. We also provide custom fabrication and design services to turn your ideas into reality. Our team of engineers and demo derby drivers have designed, manufactured and "derby tested" all parts to insure quality and durablility, even under the most extreme conditions. Our parts are manufactured, housed, and shipped out of our 140,000 square foot facility located in Coopersville, Michigan.