dnm mountain bike air rear shock with lockout 190mm dnm product specification: adjustments rebound / lockout / air pressure adjustable, damper shaft dark hard-anodized al-7075 ø 10 mm (0.39 inch) shaft. dark hard-anodized al-6061 shock body.riding style xc /trail, available size eye to eye x travel 165 x 35 mm ( 6.50 x 1.38 inch) 190 x 50 mm ( 7.83 x 1.97 inch) 200 × 55 mm ( 7.87 × 2.17 inch) weight: 0.4 kg(0.88 ib) for 165 mm lenght<br/>extra bushing includes: top busing size 8mm x 24mm bottom bushing size 8mm x 24mm, includes extra bushing and hardware 8mm x 50mm length. we have included an additional set of accessories to meet the different size requirements of some customers please see 2nd pictures <br/>functional; rebound adjustment knob +direction rotation increase damper (slow),- direction rotation, decrease damper (fast). compression adjuster + direction rotation lock-out,- direction rotation open up.main air chamber supply air pressure according to pressure meter<br/>barometric recommendation; weight 120 lbs - main air chamber 90 psi, negative air chamber 50 psi.weight 140 lbs - main air chamber 105 psi, negative air chamber 50 psi.weight 160 lbs - main air chamber 120 psi, negative air chamber 55 psi.weight 180 lbs - main air chamber 135 psi, negative air chamber 65 psi.weight 200 lbs - main air chamber 150 psi, negative air chamber 70 psi.weight 220 lbs - main air chamber 165 psi, negative air chamber 75 psi.<br/>