Fitment – 410mm air shock absorber universal fit for most 150cc~1002cc street bikes, Karting (Go kart) and Moped Quad (ATV). Fit for Banshee350, YFZ 450, Raptor 660 660R 700 700R; Fit for Honda Sportrax TRX400EX, TRX450R ; Fit for Suzuki Z400 QuadSport LTZ400 ATV. Also Fit for other ATV with 410mm eye to eye distance Work Well As An Upgrade – 410mm air shock absorber enough and plenty sturdy, The Shock Absorbers soak up small bumps well and allow much better control over larger ones. Changed The Entire Feel of Bike – The ride in front is much smoother and you have better control. Really good ride right off the bat with nothing adjusted, and still fine tuning them. Makes Your Way Safer – Good Replacement, Does not bottom out with an driver on it, and makes it way safer. Please Note that the Spring can be adjusted (soft and hard), but the Air Pressure (height) can’t be adjusted. Install fairly quickly, the swap of shocks is pretty simple and straight forward. Spring thickness: 8.2mm,