Rennen Infinity Bolts are the latest product developed out of the Rennen headquarters. Rennen took one of the simplest components on a BMX bicycle "The Chainring Bolt" and Rennen made it better. Rennen has done it again with the Infinity Bolt. A simple but very effective shoulder just under the head of the bolt serves to distribute the load and make this the strongest Titanium 6AL-4V Chainring bolt on the market. Chain Ring Bolt LenghtsRegular: 6.2mm Chain Ring Nut LenghtsRegular: 6.2mm While all other bolts on the market use a 5mm internal hex Rennen chose 4mm to provide more material and increasing their strength further by 8.5% Rennen purchases USA made 6AL-4V Titanium and produce these on a state of the art multiaxis CNC lathe in house. They do things this way because they have full control over the designs and production, and the alternative of ordering parts out of a catalog is unoriginal and boring. Chainring Bolts use a 4mm/8mm allen wrenches for assembly. Regular length has been optimized to work with most gear crank combinations. XL is specifically designed for thick crank spiders like Answer Accelerator cranks. XXL is made for RaceFace SixC Carbon cranks. Titanium Bolts come with 1oz of Finishline Ti-Prep anti seize packet. Bolts are sold in individual packs for front and rear.
