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MST is the UK’s leading undercarriage parts supplier, stocking a comprehensive range of ITR manufacture track chains, track shoes, rollers, sprockets and idlers for most tracked machines in the world. MST offer undercarriage parts for the smallest mini excavator to the largest mining machines.

With over 50 years in the undercarriage business, MST has built up an excellent reputation within the industry. We can offer our customers an unrivalled service when it comes to advising and supplying the correct choice of replacement undercarriage parts to suit our customers’ specific application and site conditions.

Track chains

ITR track chains have been proven to perform in the World’s toughest wear applications. ITR chains are manufactured in USCO SPA’s 100% owned factories to ensure product quality is consistently guaranteed. ITR’s range includes excavator greased and sealed chains plus ITR’s premium range chains for bulldozer and traxcavators.

Track shoes

Through hardened steel, track shoes are available in a range of styles including single, double and triple bar grouser versions. Supplied from stock and made to order in any width and plate thickness.

Track groups

MST can offer either complete NEW track groups (new track chains fitted with new track shoes) or, if your customers’ existing track shoes are serviceable, MST can offer service exchange track groups (new chains fitted with part worn track shoes). Track groups can be supplied in varying lengths and widths depending on customer specifications.

track rollers

MST can offers an impressive range of ITR excavator and bulldozer, lower and top carrier rollers for most makes and models of tracked machinery. MST rollers are quality guaranteed to ensure maximum wear life.

Sprockets and segments

Bolt on sprockets and segments to fit most bulldozers and excavators on the market. ITR has invested heavily in their sprocket manufacturing process to ensure the quality of the finished product is maintained.


Hard wearing site conditions can cause idlers and track adjusters to wear and require replacement. To assist in these circumstances, MST holds large stocks of idlers and recoil springs to ensure a fast turnaround if a replacement is required.

Undercarriage service and repair

Reconditioning undercarriage parts for over 50 years brings with it an understated confidence. We pride ourselves in offering an unrivalled undercarriage repair service, ensuring parts are fitted or repaired in the most economical manner whilst keeping machine downtime to a minimum.

  • Complete Undercarriage Overhauls
  • Track Repairs
  • Track Component Reconditioning