Pinion with 9 mm offset for Triumph Classic 18-tooth pinion with 9 mm offset for mounting wheels and oversized tires Built in hardened steel. Use the original chain. Product for: Triumph Bonneville 2001-2015 Triumph Scrambler 2006-2016 Triumph Thruxton 2004-2015 Triumph America 02-16 Triumph Speedmaster 03-16 Fast and easy to assemble it does not require any modification. As usual, Free Spirits all changes are reversible.