This Rear Tire Hugger is suitable for Triumph Tiger 800 & 800XC '11-. Made of 6mm thick Polypropylene for a fantastic and durable look, feel and performance. Not tested with aftermarket knobby tires.Design Update: June 14, 2011 Updates have been made to increase durability and fit adjustments have been made to allow fitment on the XC model. It is about ½ inch shorter, its made of thicker (6mm - was 3mm) & new material (Polypropylene was acrylic-capped ABS), which is unbreakable. It has reinforced mounting points. This improved hugger has an extra mounting mechanism at the front of the swingarm hook & loop fastener. R&G had some breakage problems but R&G has quickly reacted to fix this issue. After extensive product testing on the bumpiest roads with full luggage and heavy riders (one month and 2,000 miles for one bike, and one month and 1,500 miles for the other) they are confident that this combination of fixes make this the best rear hugger for the Triumph Tiger 800 & Tiger 800XC on the market.