FLEXpod HD Suspension with Firmer Shock & StiffenerToughened weight-saving HD stands for heavy-duty. 2 alloy plates are added to stiffen the suspension to allow for approved 3rd party seats. Available complete or as an upgrade kit.Specifications: Weight: 4.3kg/9.5lbs Impact Protection: 6g Weight Capacity: 100kg/220lbs Travel: 150mm/6" Specifications of the FLEX suspension unit: Simplicity: has only 3 unique parts Compatible with most third-party seats and attachments (including swivels) as well as Shark seats 225mm of progressive and ULTRA-SMOOTH travel Light: Only 9kg (20lb) 450mm overall height Compact: 300mm wide, 350mm deep Less fatigue: From 3-axis shock mitigation eliminates whiplash and takes stress off your body Non-corroding: soft-edged and non-marking, built with 316 stainless and Flexanite Super low maintenance Tested: 1 Million full 10g impacts Crash test rating: To HSC2000 Annex 10 requirements 3-year global manufacturer&';s warranty on all parts Independent tests reveal that Flex outperformed a well-known European brand Easy one-man installation Easily repairable: the shock can be replaced in under 2 minutes by one person Suspension can be bolted directly to your deck with 8 bolts (minimum)