20HP Serial #s 6443973 - T800999

Length of earpieces to Plug: 118cm(3

For Yamaha 115 TRR 1993

For closed helmet

For Yamaha XP500 T-MAX 2001-2011

For Yamaha DT175 DT 175 1974-1981 NO.2N5-11610-00 Piston Kit Bore Size ?66.50mm Generic Ducati Lock Set 20HP Serial #s 6443973 -FEATURES: Forged pistons for Yamaha. Manufactured using the latest computerized technologies derived from GP and F1. Forged pistons are more temperature resistant and longer lasting than cast pistons. These pistons additionally have a piston skirt coating. The piston sets are supplied complete with rings, bolts and clips. Airtight function,prevent gas leakage from the top of the piston. This piston ring also achieve the heat dissipation effect.