Engine Components

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 may experience more valve train noise with gear driven cams; oversized and undersized gears are available to help achieve correct gear lash Made in the U.S.A. It is the installer's responsibility to check all clearances and follow all procedures in the S&S instructions and Harley-Davidson manual.

Feuling Cylinder Stud and Head Kit Kit includes eight cylinder studs, eight head bolts, moly assembly lubricant and thread sealant Stock replacement; reusable studs and head bolts recommended for all V-Twin engines Precision J-formed threads prevent galling and promote more consistent torque loading Designed to exceed the needs of high-performance engines Manufactured by ARP® to Feuling's exact specifications Stop head and base gasket failure Made in the U.S.A.

Feuling Cylinder Stud Kit Precision J-form threads for optimum engagement, to prevent galling and promote more consistent torque loading Superior in strength and performance; designed to exceed needs of high-performance engines Kit includes eight cylinder studs, moly assembly lubricant and thread sealant Stock replacement; reusable studs recommended for all V-Twin engines Manufactured by ARP® to Feuling's exact specifications Made in the U.S.A.

S&S 128 Power Package Milwaukee 8 Big Bore Kit: Bolt on kit. No case machining required 4.250" bore Forged pistons 11.1: compression ratio Oil Pump/Cam Plate Precision machined from billet aluminum Passage plugs removable for servicing Independent scavenge sections for flywheel cavity and cam chest Debris screens in both scavenge pickups Magnet in cam chest to help to stop debris from entering oil pump Increased flow capacity on both feed and scavenge side Pressure Relief Valve is adjustable with unit installed in engine Pushrods: Quickee pushrods Tappets: S&S premium tappets Tappet Cuffs: Billet aluminum construction Stronger than stock material eliminates distortion Improve tappet stability in high lift and high rpm situations Cam: S&S 550 Cam- Designed for Big Bore applications Valve Springs:

S&S 124" Power Packages for Milwaukee 8 Big Bore Kit: Bolt on kit. No case machining required 4.250" bore Forged pistons 11.1: compression ratio Oil Pump/Cam Plate Precision machined from billet aluminum Passage plugs removable for servicing Independent scavenge sections for flywheel cavity and cam chest Debris screens in both scavenge pickups Magnet in cam chest to help to stop debris from entering oil pump Increased flow capacity on both feed and scavenge side Pressure Relief Valve is adjustable with unit installed in engine Pushrods: Quickee pushrods Tappets: S&S premium tappets Tappet Cuffs: Billet aluminum construction Stronger than stock material eliminates distortion Improve tappet stability in high lift and high rpm situations Cam: S&S 550 Cam- Designed for Big Bore applications Valve Springs:

Feuling Rocker Stud Kit Keep those cylinder heads from cracking Feuling® studs and nuts help relieve the stress put on the factory and SE cylinder heads, which have an extremely weak link with the rocker arm shaft standoffs Highly recommended if using higher lift camshafts and heavier valve springs Made in the U.S.A.

S&S Big Bore Kits for Twin Cam 99-06 The Big Bore kit yields excellent results with stock cylinder heads Easy installation: no need to bore or split existing cases, just swap the cylinders Cylinders are constructed from premium aluminum castings with cast-in iron liners Kits include cylinders, pistons, rings and gaskets (head, base and exhaust) Black or silver powder-coat finish Made in the U.S.A. This project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.

S&S Big Bore Kits Twin Cam The Big Bore kit yields excellent results with stock cylinder heads Easy installation: no need to bore or split existing cases, just swap the cylinders Cylinders are constructed from premium aluminum castings with cast-in iron liners Kits include cylinders, pistons, rings and gaskets (head, base and exhaust) Black or silver powder-coat finish Made in the U.S.A. This project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.

Feuling Econo Beehive Valve Springs Twin Cam Made from premium stress-relieved conical ovate wire Feature extremely high-level of fatigue life Use a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion Designed to handle the demands of performance engines with 585" and smaller lift camshafts Kits include: Econo BeeHive® valve springs, lightweight 7° steel retainers, machined heat-treated chromoly spring seats, seat shims, valve locks and a set of premium Viton® valve seals equipped with spring-loaded valve stem wiper system Seat lbs./installed height; 183 lbs. at 1.770" (0.510" lift), 175 lbs. at 1.795" (0.535" lift), 172 lbs. at 1.813" (0.553" lift), 165 lbs. at 1.835" (0.574" lift), 160 lbs. at 1.845" (0.585" lift), 380 lbs. at 1.260" OPEN HEIGHT coil bind at 1.190" Dyno proven and track tested Feuling® BeeHive® valve springs must be installed at the correct OPEN HEIGHT, matching max lift to the open height spec of the valve springs Made in the U.S.A. Econo BeeHive® kits are direct replacement with no machining or rocker box clearance required for cams up to .574" lift for 84-04 Big Twin and 86-03 XL and up to .585" lift for 05-17 Twin Cam.

Feuling High-Load Beehive Valve Springs With Titanium Retainers Made from premium stress-relieved conical ovate wire with nitrided surface heat treatment, shot-peened surface enhancements and Nano Peen™ polish Feature extremely high level of fatigue life Use a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion Designed to handle the highest demands of performance engines with high-lift, steep-ramped camshafts Kits include: High-Load BeeHive® valve springs, lightweight 10° Titanium retainers manufactured from Ti-17 alloy and micropolished for enhanced fatigue life, machined heat-treated chromoly spring seats, seat shims, valve locks and a set of premium Viton® valve seals equipped with spring-loaded valve stem wiper system Seat lbs./installed height; 217 lbs. at 1.789" (.574" lift), 215 lbs. at 1.800" (.585" lift), 208 lbs. at 1.819" (.604" lift), 200 lbs. at 1.845" (.630" lift), 185 lbs. at 1.900" (.685" lift), 170 lbs. at 1.935" (.720" lift), 415 lbs. at 1.215" (open height) coil bind at 1.125" Dyno proven and track tested Feuling® BeeHive® valve springs must be installed at the correct OPEN HEIGHT, matching max lift to the open height spec of the valve springs Made in the U.S.A. Feuling® BeeHive® valve spring kits are direct replacement with no machining or rocker box clearance required up to .574" lift for 84-04 Big Twin and 86-03 XL and up to .700" lift for 05-17 Twin Cam. Larger camshafts require valve guide machining for seal-to-retainer clearance.

Feuling Endurance Beehive Valve Springs With Titanium Retainers Made from premium stress-relieved conical ovate wire Feature extremely high-level of fatigue life Use a much smaller and lighter weight retainer to reduce valve weight and create quicker rev and smoother motion Designed to handle the demands of performance engines with 585" and smaller lift camshafts Kits include: Econo BeeHive® valve springs, lightweight 7° steel retainers, machined heat-treated chromoly spring seats, seat shims, valve locks and a set of premium Viton® valve seals equipped with spring-loaded valve stem wiper system Seat lbs./installed height; 183 lbs. at 1.770" (0.510" lift), 175 lbs. at 1.795" (0.535" lift), 172 lbs. at 1.813" (0.553" lift), 165 lbs. at 1.835" (0.574" lift), 160 lbs. at 1.845" (0.585" lift), 380 lbs. at 1.260" OPEN HEIGHT coil bind at 1.190" Dyno proven and track tested Feuling® BeeHive® valve springs must be installed at the correct OPEN HEIGHT, matching max lift to the open height spec of the valve springs Made in the U.S.A. Econo BeeHive® kits are direct replacement with no machining or rocker box clearance required for cams up to .574" lift for 84-04 Big Twin and 86-03 XL and up to .585" lift for 05-17 Twin Cam.

Feuling High-Load  Beehive Valve Springs With Titanium Retainers For M8 Machined from a premium grade Hi-tensile chrome silicon single conical ovate wire, shot-peened with a specially processed thermal heat treat and super NexTex® finish to give these valve springs the needed fatigue life to exceed the high demands of V-Twin engines from stock to performance FEULING® BEEHIVE® valve springs use a smaller lighter weight retainer which drastically reduces the valve weight creating a quicker revving and smoother motion than comparable dual or single valve springs. Valve springs are a direct bolt-in replacement, no spring seat or rocker cover machining required up to .565” lift Springs will accommodate over .600 cam lift, but will require spring seat pocket machining on the cylinder heads to set correct spring open height Smaller lighter weight retainers which drastically reduce the valve weight creating a quicker revving and smoother motion than comparable dual or single valve springs Eliminate valve spring separation, maximize stability, reduce valve-train noise & harmonics Kits include: matched set of Feuling® High Load Beehive® valve springs, Ti retainers, machined spring seats, seat shims, valve locks and a set of premium Viton® valve seals equipped with a spring loaded valve stem wiper system ONLY recommended for large lift camshafts and RACE style engines as these valvesprings if not set properly will create extreme rocker arm deflection Seat lbs./Installed Height 151 Lbs. @ 1.475 (0.485 Lift) 144 Lbs. @ 1.498 (0.508 Lift) 143 Lbs. @ 1.501 (0.511 Lift) 140 Lbs. @ 1.511 (0.521 Lift) 124 Lbs. @ 1.562 (0.578 Lift) 120 Lbs. @ 1.582 (0.592 Lift) 304 Lbs @ 0.990 OPEN HEIGHT Coil Bind @ .945 Recommended for .540”+ lift camshafts Feuling® BeeHive® valve springs must be installed at the correct OPEN HEIGHT, matching max lift to the open height spec of the valve springs Made in the U.S.A.

S&S Sidewinder Valve Springs Unique S&S design dual-spring kit reduces the risk of valve float For valve lift to .585" with 1.800"/130 lb. installed height, 325 lb. at max lift Includes springs, top and bottom collars, keeper shims and valve seals Made in the U.S.A.

Feuling Race Series Short-Travel Lifters New revolutionary design with 0.115 of total travel vs. a full travel lifter with 0.200. These hydraulic lifters will increase RPM by decreasing valve float and valve-train harmonics while maintaining a quiet engine. The travel reduction reduces the amount of oil that is required to fill the inside of the lifter which reduces oil aeration inside the lifter on steep, fast action high lift camshaft lobes. When oil aeration is present inside the lifter, the pushrod seat drops when the lifter rolls onto the front cam lobe ramp after squeezing the aeration down thus creating a noisy poor performing lifter. Feuling short travel lifters should be set with 0.065 - 0.070 of pre-load and with the normal engine growth from heat will put the operating lifter pre load at or around half travel. Machined from a steel body and designed to exceed the needs of large lift camshafts and higher valve spring pressures with a slower bleed down rate. RACE SERIES® lifters maintain proper oil flow to the top end, increase engine RPM, valve-train stability, decreasing valve float promoting maximum valve lift. Feuling® recommends Race Series® lifters for engines running higher than 185 Lbs. valve spring seat pressure. FEULING recommends the use of a high volume oil pump which will result in quieter, better performing lifters. Race Series® lifters are compatible with either FEULING® HP+® or Race Series® oil pumps and are designed for use with both street and strip engines. Spin-Tron dyno developed and track proven, Made in the USA. Stock replacement to full out Drag race Adjust FEULING SHORT TRAVEL lifters with 0.065 - 0.070 of pre load on the lifter. Precision ground needle roller bearing with high chromium steel axle for long life and minimal friction Cold forged extra long piston, precision ground and fitted for controlled leak down and pump up High flow disc style quick reacting check valve for better reaction at higher RPM. Recommended for both strip and performance street engines Made in the U.S.A. Feuling® recommends pumping up each lifter by hand prior to installation, to remove all air and provide a fully pumped up lifter. Use of a thin weight oil like ATF in a squirt can works well

Feuling Race Series Full Travel Lifters Full-travel hydraulic lifters made from machined steel Exceed the needs of large-lift camshafts and higher spring pressures with a slower bleed-down rate Maintain proper and critical oil flow to valves, springs, rockers, shafts and valve guides Increase engine rpm and valvetrain stability; decreases valve float for maximum valve lift Recommended for both strip and performance street engines High-volume oil pump recommended. Recommended for engines running higher than 185 lb. valve spring seat pressure. Made in the U.S.A.