ARMA V4 (Downhill MTB Race Damper in Various Sizes) Engineered with downhill focus in mind, the shock structure has seen a redesign in order to be more frame friendly, with metric and imperial sizing, and both classic eye to eye and trunnion mounts. HBC has been enhanced with a wider range of adjustment, in order to prevent bottom-out issues, while allowing riders to use softer spring rates and still have good support. The Arma includes the following features 3 way adjustable: LSC-HSC-LSR with new 5mm Allen adjustment for HSC for easier tuning Unique patent pending PSR technology to avoid harsh top out Improved adjustable HBC technology: Effective through last 20% of the stroke with more energy absorption due to new hydrostatic seal design 14mm diameter diamond like carbon (DLC) coated shaft. Most advanced engineering coating available for durability and low friction. New Spring Thrust Bearing for improved alignment and noise reduction. New large volume bladder design with very low reservoir pressure (55psi) to ensure maximum sensitivity. New high viscosity index oil to provide improved consistency over a wide range of operating temperatures. High flow 29 mm main piston 24 mm valve piston 14 mm shaft (50% larger than most other coils on market to help deal with large side loading events) Engineered rebound circuit to separate bump and rebound oil flow – Ultra low-friction coating User adjustable HBC technology Full custom hydraulic setup that is bike and rider specific for each shock Low cavitation Very low hysteresis for high dynamic response High turbulent flow for progressive dampening and mid stroke support Low friction seal Thinner bottom-out bumper and debris clearing washer New low profile rebound knob for easy spring swap Price is for damper only. Springs are available on the product page and a 2nd spring can be purchased at a discounted rate. EXT light weight springs available in 25 Lb increments *All Shocks are custom built and tuned for specific bike, rider weight and riding style. If you aren't sure about an option, just leave it blank and we'll get in touch if we have questions. Sizes available: METRIC STANDARD 210 / 50 mm210 / 52.5 mm210 / 55 mm230 / 57.5mm230 / 60 mm230 / 62.5 mm230 / 65 mm250 / 70 mm250 / 72.5 mm250 / 75 mmMETRIC TRUNNION 165 / 45 mm185 / 50 mm185 / 52.5 mm185 / 55 mm205 / 57.5 mm205 / 60 mm205 / 62.5 mm205 / 65 mm225 / 70 mm225 / 72.5 mm225 / 75 mmIMPERIAL 222 / 67 mm241 / 74 mm267 / 87 mm
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