Bottom End

Heavy-duty OE replacement connecting rodsCertified 8620 AISI steel provides superior strengthCrankpins are manufactured from hot-rolled ASTM 4115 and case hardened to 58-62RcFeature the latest in...

Designed with Comp Cams' industry-leading technology and trademark Endurance Ramps, the Mega 8 series of performance cams covers every bike and riding styleWith reduced valve train noise and...

Piston Kit - 96.96 Mm - Yamaha 4086Da Yamaha -- YZ 450 F -- (2023, 2024)

Piston Kit - 96.96 Mm - Yamaha 4093Da Yamaha -- YZ 450 F Monster Energy -- (2023); Yamaha -- YZ 450 F -- (2023, 2024)

Piston Kit - 80.95 Mm - Gas Gas | Husqvarna | Ktm 4090Da Husqvarna -- FC 250 -- (2023, 2024, 2025); Husqvarna -- FE 250 -- (2024); Husqvarna -- FC 250 Rockstar Ed. -- (2024); KTM -- 250 XC-F --...

Piston Kit - 96.94 Mm - Yamaha 23958B Yamaha -- YZ 450 FX -- (2016, 2017, 2018); Yamaha -- YZ 450 F -- (2017, 2016, 2014, 2015); Yamaha -- WR 450 F -- (2017, 2016, 2018)

All pistons are heat-treated with a T-5 hardening and tempering cycleAll piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...

Piston Kit - 95.96 Mm - Kawasaki Kx450F 24018A Kawasaki -- KX 450 F -- (2015)

Piston Kit - 91.93 Mm - Yamaha Wr/Yz400F 22567A Yamaha -- YZ 400 F -- (1998, 1999); Yamaha -- WR 400 F -- (1998, 1999, 2000)

Wossner Connecting Rod Kit - Yamaha P2071-R Yamaha -- YZ 65 -- (2024, 2018, 2019, 2021, 2020, 2023, 2022)

Wossner Connecting Rod Kit - Yamaha P2072-R Yamaha -- YZ 85 -- (2024, 2020, 2023, 2021, 2019, 2022)

Connecting Rod Kit - Performance - Kawasaki P2078-R Kawasaki -- KX 112 -- (2024, 2023, 2022)