Additionally, our unique hydraulic construction system effectively reduces bumps and vibrations on the road surface, prolonging the life of vehicle components. This system ensures stable performance and provides enhanced comfort during your ride. Adjustable Preload] Our air shock absorber features spring preload adjustment, enabling precise tuning to enhance shock absorption. This system ensures stable performance and provides enhanced comfort during your ride Additional compatibility details are available in the product description. Motorbike Air Shock Fit for TRX400EX 2004 395mm rear Yellow RKV86 Adjustable 410mm Front Air Shock Absorbers, Aluminum For Honda TRX 400EX 450R & ER 250R 400mm Front Adjustable Air Shocks Reservoirs ; Item number. 316084685677 ; Placement on Vehicle. Front, Left, Rear, Right They're waterproof and highly resistant to rust, ensuring longevity in diverse conditions. 【Adjustable Rebound Speed】 Easily adjust the knob to control the rebound speed of the shock absorber, offering flexibility for fast or slow adjustments. 【Confidence in Quality】 Included in your purchase are a pair offront shocks and a adjustment tool. Adjustable Air Shock Front & Rear Shocks Suspension For Honda Sportrax 400 TRX400EX TRX400ER ATV Shock Absorbers If you encounter any issues or defects, please don't hesitate to reach out to our customer service team.