TSP Billet Cylinder Head Yamaha YZ250/X Compression:Low Compression KTM 500 Mx 1989 to

KTM 500 Mx 1989 to 1991

NOTE: This conversion is only for Gen 1 portals purchased before October 13

SE-R 250 Six Days 18

even after extended use

Moisture wicking interior panel reduces chafing

TSP Billet Cylinder Head Yamaha YZ250/X Compression:Low Compression KTM 500 Mx 1989 toTSP Billet Cylinder Head and Insert Yamaha YZ 250 and YZ 250X 1999+. All TSP heads also include a complete head gasket kit. TSP Billet Cylinder Head Yamaha YZ 250 YZ 250X Our new TSP Billet cylinder heads are machined from solid 6061 T6 stock and offer improved performance, reliability and fuel economy. They are the best bolt on mod you can buy for your bike! Our design offers better heat dissipation than many other 2 piece designs due to the large