The Infinity Side Stiffeners are a set of plastic pieces that fit your B5M Infinity chassis (XF-I105), mounting between the main chassis plate and the side decks to provide torsional rigidity and help improve consistency. These parts weigh in at less than 10 grams, helping to maintain the significant weight savings of the carbon fiber chassis kit. They fit perfectly, using existing holes for mounting, while still allowing easy and quick flex adjustments.

As an additional benefit, they provide a convenient mounting location for Velcro, making it easier to attach your body to the chassis.

These parts will only fit on the Infinity B5m Chassis Kit, part # XF-I105. They will not install on a stock B5m chassis or other aftermarket chassis.

Installation is very simple - simply loosen the screws that hold the chassis to the side decks, remove the 8mm standoffs from the rear of the chassis, slide the Side Stiffeners in and tighten everything back up!