Best Pirce 👏 Mon Ster Razor Chain Tensioner Spring For The E300, MX350, MX400, MX500, MX650, RSF350, RSF650, & SX500 😍

If you only need the spring, why should you have to buy the entire new tensioner assembly? Now you can save money with one of our Razor chain tensioner springs. Sometimes it seems that these little springs are the most delicate part of a scooter’s operating drive system, and it can be frustrating when one snaps or gets lost.

Now you can replace that missing spring for about the cost of the pocket change that you find under the cushions of your sofa.

We offer three versions of spring; one that fits the E300 (version 36+) scooter, one for the MX350/MX400 dirt bikes, and one compatible with the MX500/MX650/SX500 dirt bikes, plus the RSF350 and RSF650 Electric Sport Bike. And at Monster Scooter Parts low everyday price, you might just want to buy an extra one to keep around as a spare.

Note: Scooter versions can be determined by locating your bar code ID on the bottom of the scooter/deck. The 7th and 8th digit in the series will tell you the version of your product: 01=version 1; 02=version 2; 09=version 9, and so on.

⚠ WARNING California Residents: Proposition 65 Warning

E300 V36+ Spring
Length: 1-3/4″
Diameter: 5/8″
Wire thickness: 1/16″

MX350/MX400 Spring
Length: 1-3/4″
Diameter: 3/4″
Wire thickness: 5/64″

MX500/MX650/SX500/RSF650 Spring
Length: 2″
Diameter: 11/16″
Wire thickness: 5/64″