Bottom End

• Conversion camshafts are a hybrid, with early '99-'06 inner cam journals and late '07-'17 outer cam journals • Update old mechanical-style cams and tensioners to new-style hydraulic tensioner system • 525 Cam: • Designed to increase torque band width...

• Comes complete with crankpin, big-end bearing, small-end bearing, and washers • Easy to install - Yamaha YZ 450 F (2023, 2024, 2025); Yamaha YZ 450 FX (2025, 2024); Yamaha WR 450 F (2024, 2025)

• Comes complete with crankpin, big-end bearing, small-end bearing, and washers • Easy to install - Kawasaki KX 450 X (2025, 2024); Kawasaki KX 450 (2025, 2024)

• Comes complete with crankpin, big-end bearing, small-end bearing, and washers • Easy to install - Honda TRX250R FourTrax (1986); Honda ATC 250 R (1986, 1985)

• Comes complete with crankpin, big-end bearing, small-end bearing, and washers • Easy to install - Beta 350 RR 4T (2015, 2018, 2025, 2019, 2016, 2024, 2020, 2023, 2017, 2021); Beta 390 RR 4T (2024, 2015, 2021, 2025, 2017, 2020, 2018, 2019, 2023, 2016)

• Comes complete with crankpin, big-end bearing, small-end bearing, and washers • Easy to install - Beta 300 RR 2T (2020, 2019, 2021, 2018); Beta 250 RR 2T (2019, 2018, 2021, 2020); Beta X-Trainer 250 (2019, 2018); Beta X-Trainer 300 (2018, 2019, 2020,...

• Comes complete with crankpin, big-end bearing, small-end bearing, and washers • Easy to install - Beta 300 RR 2T (2013, 2014, 2016, 2015, 2017); Beta 300 RX (2022, 2021, 2023, 2025, 2024); Beta X-Trainer 300 (2017, 2016, 2015); Beta 250 RR 2T (2017,...

• Carburetor and or throttle body work required along with a performance exhaust and intake system • Maintains low end performance with eye-blurring mid and top end power • High-performance valve springs, pushrods and lifters required • 2500-6900+ RPM...

• Aggressive pulling power with a “nasty” sound, the Reaper 521 grind will shine in 114” and larger cubic inch engines with added compression ratio • Ported cylinder heads are not required, but will complement the cam and add even more pulling power...

• Aggressive camshaft requiring high lift and higher load valvesprings, performance pushrods and lifters • High flow air cleaner and triple stepped exhaust pipe highly recommended • Heavy duty pushrods are highly recommended • RPM range 2,850 - 6,250 -...

• A four-gear set is required for gear-driven cams that do not come with secondary cam gears; includes two secondary cam gears, outer cam drive gear, outer pinion drive gear and mounting hardware • Due to the inherent characteristics of gear drives, you...

• A four-gear set is required for gear-driven cams that do not come with secondary cam gears; includes two secondary cam gears, outer cam drive gear, outer pinion drive gear and mounting hardware • Due to the inherent characteristics of gear drives, you...