Description
Fitment: 121″ Harley Davidson M8 Non-VVT Models
Our 121″ M8 (Non-VVT) Zippers Red Shift Chain Drive Cam Chest Upgrade includes your choice of Zippers 528 or 532 Red Shift Cam and S&S Quickee Adjustable Pushrods. Build a bullet proof cam chest by adding other quality products listed below that fit your needs.
Zippers 528 Red Shift Cam: The new RS528 grind has been carefully designed and tested by Zipper’s engineering to yield the best possible riding experience while producing the most Torque and Horsepower for a bolt-in camshaft. It works exceptionally well with the new ride modes available in the 2024 Touring models. The new RS528 cam provides the performance advantage in power and throttle response right where you ride, with a “Drag bike” lope at idle and impressive exhaust note under load. The new Red Shift RS528 bolt cam is designed specifically around the new Gen II cylinder head and induction system. It provides instant acceleration from below 2,000 RPM while pulling strong to 6,000. Made with a proprietary Red Shift Cams® ramp design, delivering quiet operation and long valve train life.
Zippers 532 Red Shift Cam: The new RS532 grind has been designed and tested by Zipper’s engineering to compliment the new RS528 bolt-in camshaft, but specifically made for engines with higher compression and larger displacement. In the spirit of Red Shift early torque designs this is the best bolt-in cam for the new 121 ci Non-VVT engines for the strongest overall balance of Torque and Horsepower.
S&S Quickee Adjustable Pushrods: Cycle Solutions Inc utilizes these pushrods in every cam chest we build. That’ s because they allow easy motor access if you should need to go back in down the road and they are made of chrome moly steel for superior strength. This kit consists of 4 quickee pushrods, 4 pushrod covers and required O’rings. Installation is a snap. Screw the threaded adjuster into the pushrod until the threads disengage and the adjuster simply slides up into the pushrod body. That makes the pushrod assembly shorter, so installation and removal is a snap. Once the pushrod is installed, pull the adjuster down and re-engage the threads to adjust the pushrod. Once the pushrod is adjusted, the locknut positively prevents the adjuster from moving. The ball ends of Quickee pushrods are drilled so that oil can flow through the pushrods to lubricate the top end. That’s it! It’s a Quickee.
Below are additional products that will take your Zippers Red Shift Chain Driven Cam Chest build to the next level. All of these products are upgrades offered to our customers at our show truck and our shop so that they can build the best cam chest possible that delivers performance and durability, as well as, a guarantee to some bragging ri
Feuling HP+ Oiling System: This convenient kit includes the Feuling HP+ camplate, oil pump, lifters and gaskets. Oil is the Life Blood of your Engine! FEULING® oiling system kits combine all the needed components to finish your TC® engines oiling system under 1 Part #, available in HP+®or RACE SERIES® kits. FEULING® oiling system kits increase oil pressure, oil volume, engine oil flow and return oil scavenging, eliminating wet sumping and oily air cleaners. Test results show 25-35 degree cooler engine temperatures, 15-30 degree cooler oil temperatures, 15-30 more pounds of oil pressure and quieter smoother engine operation. Results also show a substantial increase of oil pressure and 3 H.P. and 4 Ft. Lbs of T.Q to the rear wheel.
-Both HP+® and RACE SERIES® kits include FEULINGS® HIGH FLOW billet camplate made from 7075 aluminum which is 50% harder and stronger than the factory, SE® and other aftermarket camplates. FEULING® increases oil flow and volume by enlarging the oil pump reservoirs and critical oil passages including matching the oil port holes throughout the camplate to the port holes in the engine case which increases engine oil flow to the lifters, piston cooling jets, crankshaft and rod bearings. -HP+® SERIES Kits include a billet 6061 aluminum high volume oil pump, FEULING® HIGH FLOW anodized camplate, HP+® Hydraulic roller lifters, gaskets and O-ring kit.
Feuling HP+ Lifters: Performance full travel hydraulic roller lifters, Optimize oil flow to the top end – valves, Valve springs, rocker arms, rocker shafts & valve guides. Cooler oil and cylinder head temperatures and reduced wear extending life of top end valve gear. CNC machined and precision ground, Drop in replacement for stock lifters, Dyno developed and track tested. Made in the U.S.A. These lifters have hardened rollers, not harden coated rollers like other lifters which can show wear with as little as 5000 miles. Cycle Solutions Inc. uses these Feuling lifters in 90% of the cam chests we build because the stock lifters are already failing.
K&P Engineering Lifetime Oil Filter/Cooler: Cycle Solutions Inc. is all about quality products that perform and here is another great example. This oil filter is a washable, re-useable oil filter made from billet aluminum that flows oil faster than a traditional paper filter and has a larger cooling area to actually help cool your engine oil down. This filter is available in three different sizes to accommodate any ones budget. Cycle Solutions Inc. worked alongside K&P Engineering to create a larger oil filter for maximum cooling, filtration and performance. If your budget allows we recommend the S44 XL or the S69 XXXL K&P Oil filter size. The S44 XL version has 20% more cooling surface area than the original S4 and has a total length of 3.57″. The S69 has 100% more oil cooling surface area and has a total length of 5 1/8″. If your motorcycle has a crank position sensor where the oil filter goes then you will need to stick with the S44 or S4 Size filter. The K&P Oil Filter is offered in finishes other than the ones listed here. If you would like a different finish then call us! Harley’s run hot so why not take every opportunity to help cool them down?
Inner Cam Bearings: Cam change kits include genuine Torrington® brand full-compliment (no inner cage) inner bearings – the best you can buy! These inner cam bearings are far superior to the stock ones. Inner cam bearings can fail by letting needle bearings fall into the case and cause catastrophic damage to a motor. The installation of these bearings goes smoother if you have the specialized tools that allow professional, damage-free removal and installation. They can be removed with out the tools with a little more effort. If you can not borrow the tools from a buddy you can purchase the removal tool HERE and the installation tool HERE.
Feuling Cam Chain Drive Sprocket: This is a machined steel, stock replacement roller chain drive sprocket. The machine build quality in the tip of the pinion shaft is over machined making the stock roller chain sprocket sloppy. We have seen up to a 7 degree variance in the rotation of the crankshaft which could advance or retard the crank timing. The Feuling Cam Chain Drive Sprocket is machined from steel and has a tighter fit than the stock one and has no play or variance on the crankshaft. You can watch our video by clicking here that better explains this product and why to replace the stock one.
- The factory tappet guides are constructed of plastic, which allows tappets to twist under heavy stress
- These tappet cuffs capture the tappets without impacting vertical motion to keep them aligned, even in high-rpm situations
- Billet aluminum construction with a hard anodized black coating
- Easy upgrade when changing tappets or doing a cam change
- Made in the U.S.A.
- NOTE: Due to variances between cam and tappet manufacturers, always check the tappet to tappet cuff clearance
M8 Cam Chain Tensioners:
Zipper’s M8 Cam Chain Tensioner: The Red Shift Dual Piston Cam Chain Tensioner is a direct replacement, aftermarket product designed to improve cam timing accuracy and valve train control at two critical key areas – the drive and driven cam chains on all 2017-up engines. This is a must have for all Harley-Davidson Milwaukee-Eight engines.
S&S Cam Chain Tensioner: Precision Machined from Billet Aluminum. Thicker shoe for longer wear. Direct chain oiling. Larger piston for more consistent pressure, Tighter tolerances improves stability.












