FULL KIT - Air Shock Upgrade + Swingarm Bushings + Shock Mount Bolts Upgrade

Comprehensive kit to significantly reduce the play, clunks, and rattles in the rear end of the RFN SX 150 250 350 500 700 series bikes as well as improve the suspension performance and adjustability. 

Note: an option for the SX E800 is coming soon. This kit does not fit the SX E800. 

-  Air shock upgrade to replace the very poor quality OEM shock (fixed rate heavy spring, no lubricated internals, steel-on-plastic top out design, loose fitting bushings). This air shock offers significantly improved suspension action via machined shock body, an actual piston with teflon wear ring, and lubricated internals. Excellent bushing fit for clunk/rattle reduction, and infinite spring rate adjustability for our young riders. A very nice shock for the money. These bikes have a unique shock length, with no direct-fit options available, so each shock gets disassembled and shortened to match the OEM static length to maintain OEM geometry. Pressure can be adjusted via Schrader valve using standard bicycle tire pumps, mountain bike shock pumps, etc.

- Two CNC machined 7075 T651 aluminum swingarm bushings have a slightly larger O.D. and smaller I.D. to improve fitment of the swingarm axle/bearing/bushing interfaces to minimize clunks and rattles from the rear end of the motorcycle. 

- Two stainless steel shock mount bolts with a shoulder/shank to replace the OEM full length threaded bolts which fit poorly and wear into the shock bushings. Tighter fit helps to further reduce clunks/rattles. NOTE: some RFN SX bikes appear to have been built with shouldered/flanked bolts while others are not. This part of the upgrade may not be necessary if your bike was built with those.

Full Kit includes:
(Qty 1) adjustable air shock, length shortened to match OEM 
(Qty 2) 7075 T651 aluminum swingarm bushings
(Qty 2) stainless steel shouldered bolts, shortened to length for mounting shock

Note for International Orders: due to shipping carrier requirements this product will ship empty/without compressed gas or liquid inside. Please email if you have any questions about this.