Air Shock + Bushings + Mounting Bolts Upgrade - FULL KIT

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

-  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 oiled internals. Excellent bushing fit for clunk/rattle reduction, and infinite spring rate adjustability for our young riders. A very nice shock for the money. Every shock gets disassembled and shortened to match the OEM static length of 133mm so that motorcycle geometry remains unchanged. Pressure can be adjusted with standard bicycle tire pumps, mountain bike shock pumps, etc. (Schrader valve) Recommended starting pressure is 75 psi/5.2 bar.

- 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 shoulder/shank to replace 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 upgrade is likely not needed if your bike was built with those. Inspect your bike before ordering.

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