Truck Maintenance Solutions

Call Us: (303) 288-0910

Retarder Systems

We repair and service bus and truck retarder systems such as Telma, Klam, and Frenelsa.   Many of our Colorado clients come from Denver, Brighton, Castle Rock and Fort Collins. We have been working with brake retarders for years and our clients come from all over the United States.

Braking Retarder Systems major advantages are:

  • KLAM retarders are used to create counter-force, no friction is created, which means that wear and tear normally associated with moving mechanical parts and systems are avoided.
  • TELMA retarders remain effective even after the engine stops, or when the gearbox is in neutral.
  • FRENELSA electric retarder is a secondary braking system that extends the life of service brakes and virtually eliminates the brake fade. Many are used for trailers or hauling such as 5th wheel RV’s.


We have the experience and knowledge to be able to service, maintain and repair your retarder system for your truck, bus or 5th wheel.

TELMA Retarder System Denver, CO


10151 E. 107th Pl.
Brighton, CO 80601
Phone: (303) 288-0910
Fax: (303) 288-0924


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Who is TMS?

We are a bus, truck and RV repair and service facility serving clients from Castle Rock, Denver and Fort Collins, Colorado area and beyond. Family and veteran owned & operated since 1999, TMS Truck & Bus has a large facility to accommodate almost any truck, bus, or RV. We are very honest and believe in quality repairs that are done the correct way the first time.