Safecraft’s Model PB3 / PB5 portable units are designed to mount on roll bars or be flat-mounted in various motorsport vehicles. The optional quick-release bracket is custom-designed to offer versatility of placement and ease of use. Just FLIP the lever, GRAB and GO. Parts for the PB3 / PB5 and their quick-release brackets are crafted from machined billet aluminum. Unlike other extinguishers on the market, the PB3 / PB5 removable extinguishers effectively suppresses vehicle fires using a non-compacting liquid extinguishing agent. Model PB3 / PB5 systems contain Fluoro FS NOTE: Can-Am X3 requires a roll bar diameter of 1.85". SPECS: Agent Qty: 3 lb / 5 lbCylinder Type: AluminumOverall Length: 15.7" / 16.7"Cylinder Diameter: 3.25" / 4"Nominal Weight:* 4.8 lb / 7.5 lbQuick Release Bracket Nom. Weight: 1.5 lb *Nominal weight is regarding the extinguisher only. It does not include the weight of any additional mount or activation hardware. Still not sure what you need?Call us at 1 (800) 400-2259