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Belts for JR M45 Tensioner Upgrade

From $15.99
Part #
Miata MX-5 1990-2005
As Configured

Moss Motors has developed a new style tensioner assembly for the JR M45 supercharged Miatas and it is now standard in all systems! Redesigned Heavy-Duty Black Anodized Billet Tensioner Bracket Redesigned Idler Pulleys are crowned. The crowned design causes the drive belt to track in the center of the pulley all the time, instead of riding on one edge or the other. The redesigned tensioner system virtually eliminates belt slipping, an important feature, especially on higher boost systems. The kit includes 2 new idler pulleys as well. You will need to order a belt separately for use with the redesigned tensioner based on your application. Please note that this kit cannot be installed on cars without power steering.

Moss Has You Covered

  • All products we sell are warrantied against defects in material and workmanship by the original equipment manufacturer or Moss Motors, Ltd., for 12 months from the date of shipment.
  • We will replace the product or refund your purchase price at our discretion.
  • The warranty does not cover labor, failure of a related component, failure resulting from faulty installation, nor would the liability of Moss Motors exceed the cost of the original component.
  • Warranty requests should be submitted to our sales department and must be supported by the original Moss Motors purchase invoice and documentation of the failure.
  • Many of the brands we carry have their own warranty terms that have you covered outside of our 12 month protection.
Make: Mazda Model: MX-5 Miata Series: NA, NB Year: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005