Bottom End

Connecting Rod Kit contains all parts needed for crankshaft rebuildDesigned to fit OEM bearing and crank pinShot peened for ultimate strength and long life8620 forged alloyFEA (computer simulation) used to fine tune every designGerman engineeredFor best...

2-stoke pistons include piston, rings, pin and clipsPiston made with high quality, permanent skirt coating to reduce friction and piston rock for quiet and improved performance4032 T6 Forged Aluminum AlloyGerman Engineered from Wossner?s own designs and...

Each kit includes cam plate roller bearings, Koyo Torrington® full roller inner needle bearings, 12-point ARP® camshaft and crankshaft bolts, ARP® fastener moly paste and Loctite® compound and hardened washersGaskets include copper exhaust gaskets, cam...

• Stage 1 is designed for low end torque • Adds a 5%-10% power gain • Designed and dyno proven in the USA • Manufactured by utilizing state of the art valvetrain software • CNC machined from 8620 billet, case-hardened steel for an exact fit and lobe...

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 caged needle roller bearing designs for high rpm...

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 caged needle roller bearing designs for high rpm...

Heavy-duty OE replacement connecting rodCertified 8620 AISI steel provides superior strengthUniquely designed big end uses strategically located side scalloping vent slots to minimize high-RPM bearing race distortionCrankpins are manufactured from...

Hot Rods Connecting Rod Kit - Yamaha 8726 Yamaha -- YZ 250 -- (2014, 2002, 2003, 2006, 2016, 2007, 1999, 2000, 2010, 2013, 2017, 2019, 2020, 2004, 2015, 2018, 2008, 2001, 2009, 2012, 2005, 2011, 2021); Yamaha -- YZ 250 X -- (2018, 2020, 2017, 2019, 2016,...

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 caged needle roller bearing designs for high rpm...

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 caged needle roller bearing designs for high rpm...

High-performance racing camshaftsStage 1 and Stage 2 performance camshafts are drop-in cams that are designed to be used with stock valve springsIn most applications, Stage 1 cams deliver more torque and Stage 2 cams provide more peak horsepowerSelect...

High-performance racing camshaftsIn most applications, Stage 1 cams deliver more torque and Stage 2 cams provide more peak horsepowerSelect cams feature Hot Cams Improved Throttle Design (ITR) technology; these cams improve throttle response throughout...