Engine

Feuling Parts #1218 - Valve Spring Seat Shims - M8

Valve Spring Seat Shims - M8FeaturesSet valve spring open height to match camshaft lifts for optimum valve-train stability and performanceIncludes eight 0.060" thick shims, eight 0.030" thick shims, and eight 0.015" thick shims with 1...

Feuling Parts #1227 - Rocker Shaft Shims - 0.003" - M8

Kit Includes:• 24x 0.003" ShimsFeaturesQuiet your engine by tightening the rocker arm to cylinder head end play clearanceFeuling recommends an ideal side clearance of 0.0035” - 0.005” for optimum rocker arm oil psi and noise reductionM8 cylinder...

Feuling Parts #1228 - Rocker Shaft Shims - 0.005" - M8

Kit Includes:• 24x 0.005" ShimsFeaturesQuiet your engine by tightening the rocker arm to cylinder head end play clearanceFeuling recommends an ideal side clearance of 0.0035” - 0.005” for optimum rocker arm oil psi and noise reductionM8 cylinder...

Feuling Parts #1229 - Rocker Shaft Shims - 0.010" - M8

Kit Includes:• 24x 0.010" ShimsFeaturesQuiet your engine by tightening the rocker arm to cylinder head end play clearanceFeuling recommends an ideal side clearance of 0.0035” - 0.005” for optimum rocker arm oil psi and noise reductionM8 cylinder...

Feuling Parts #1230 - Rocker Shaft Shims - 0.003"/0.005"/0.010" - M8

Shim Thickness Includes:• 6x 0.003"• 6x 0.005"• 6x 0.010"FeaturesQuiet your engine by tightening the rocker arm to cylinder head end play clearanceFeuling recommends an ideal side clearance of 0.0035” - 0.005” for optimum rocker arm oil...

Feuling Parts #1235 - Gorilla Rocker Shafts - Stock Replacment - Twin Cam | Evolution Big Twin | XL

Not for RH Sportster.FeaturesProcision ground from 4140HT steel, gas nitrided and fianl surface treatedOver double the strength of factory rocker shaftsRecommended for all Twin Cam engines and especially for engines running higher lift camshafts and...

Feuling Parts #1236 - Gorilla Rocker Shaft and Arp Bolt Kit - 5/16"-18 x 2 3/4" - Early Twin Cam | Evolution | XL

Gorilla Rocker Shaft and Arp Bolt Kit - 5/16"-18 x 2 3/4" - Early Twin Cam | Evolution | XLFeaturesPrecision ground from 4140HT steel, gas nitrided and final surface treatedKit includes four Gorilla shafts and eight ARP bolt kitsMade in the...

Feuling Parts #1237 - Gorilla Rocker Shaft and Arp Bolt Kit - 5/16"-18 x 2 1/2" - Late Twin Cam | XL

Gorilla Rocker Shaft and Arp Bolt Kit - 5/16"-18 x 2 1/2" - Late Twin Cam | XLFeaturesPrecision ground from 4140HT steel, gas nitrided and final surface treatedKit includes four Gorilla shafts and eight ARP bolt kitsMade in the USARecommended...

Feuling Parts #1301 - Cam - 594 Series - Chain Drive - Twin Cam '99-'06 (except '06 Dyna)

'99 model engines using key way camshafts/sprocket will need to purchase new spline style rear cam sprocket separately.FeaturesFierce performing camshaft for an array of engine sizes, large displacement 103", 110" and 124" engines looking...

Feuling Parts #1302 - Cam - 594 Series - Gear Drive - Twin Cam '99-'06 (except '06 Dyna)

Cam - 594 Series - Gear Drive - Twin Cam '99-'06 (except '06 Dyna)FeaturesFierce performing camshaft for an array of engine sizes, large displacement 103", 110" and 124" engines looking for a superior torque band with excellent horsepower...

Feuling Parts #1303 - Cam - 594 Series - Chain Drive - Twin Cam '07-'17 | '06 Dyna

Cam - 594 Series - Chain Drive - Twin Cam '07-'17 | '06 DynaFeaturesFierce performing camshaft for an array of engine sizes, large displacement 103", 110" and 124" engines looking for a superior torque band with excellent horsepower gains...

Feuling Parts #1304 - Cam - 594 Series - Gear Drive - Twin Cam '07-'17 | '06 Dyna

Cam - 594 Series - Gear Drive - Twin Cam '07-'17 | '06 DynaFeaturesFierce performing camshaft for an array of engine sizes, large displacement 103", 110" and 124" engines looking for a superior torque band with excellent horsepower gains...

Feuling Parts #1340 - Camhaft - Reaper - 405 Series - Chain Drive - M8

Not for '23-'24 models with 121" motors.FeaturesProduces a wide powerband that increases torque and horsepower throughout the entire rpm rangeDirect bolt-in replacement for M8 engines; can be used with stock valve springs, pushrods, lifters and...

Feuling Parts #1343 - Cam - 465 - M8

Not for '23-'24 models with 121" VVT motors.FeaturesProduces solid bottom-end performance and substantial gains above 2800 RPM compared to the stock camsDirect bolt-in replacement for M-Eight engines; can be used with stock valve springs, pushrods,...

Feuling Parts #1346 - Cam - 521 Series - Chain Drive - M8

Not for '23-'24 models with 121" VVT motors.FeaturesAggressive pulling power with a “nasty” sound, the Reaper 521 grind will shine in 114” and larger cubic inch engines with added compression ratioPorted cylinder heads are not required, but will...

Feuling Parts #1348 - Cam - 592 Series - Chain Drive - M8

Not for '23-'24 models with 121" VVT motors.FeaturesGet serious with bore size, ported cylinder heads and throttle bodyRpm range 2,750-6350+Overlap: 36Made in the USAHigh flow air cleaner and triple stepped exhaust pipe highly recommendedFeuling®...

Feuling Parts #1349 - Cam - 508 Series - Reaper - Chain Drive - M8

Not for '23-'24 models with 121" motors.FeaturesProduce more power and torque in the riding RPM range, improving throttle response, acceleration and fuel mileageSmooth camshaft lobe ramps are easier on valvetrain components and eliminate excessive...

Feuling Parts #1350 - Cam - 472 Series - Reaper® - Chain Drive - M8

Not for '23-'24 models with 121" VVT motors.FeaturesGreat all-around camshaft and Feulings go to for 4-1/2" stroke 114" - 117" looking for a little more than our 465 grind and wanting a bolt-inGreat bottom end with substantial gains...

Feuling Parts #1351 - Cam - 538 Series - Reaper® - Chain Drive

Cam - 538 Series - Reaper® - Chain DriveFeaturesRevs up fast and pulls hard in engines with big bore cylinders, modified cylinder heads, intake,compression and exhaustThe Reaper® 538 grind will shine in 124” and larger cubic inch engines with added...

Feuling Parts #1352 - Reaper® Camshaft - Chain Drive - 618 Series - M8

Not for M8 VVT models.Overlap: 39Lobe Separation: 107FeaturesRace seriesRPM range 3100-6650Aggressive camshaft requiring high lift and higher load valve springs, performance pushrods and lifters.Requires large bore size, ported cylinder heads, ported...

Feuling Parts #1354 - Reaper® Camshaft - Chain Drive - 487 Series - M8

Not for M8 with 121" VVT engine.Overlap: 38FeaturesGood for 4.25" stroke with 114"-117" engine looking for an agressive bolt inProduces a wide powerbandResponds very well to increased bore and/or compression, exhaust system and air...

Feuling Parts #1370 - Reaper Camshafts - 505/515 - Buell | XL

Reaper Camshafts - 505/515 - Buell | XLFeaturesProduce a wide powerband in stock enginesSplit lift camshaft produces a solid powerband with top fuel soundFueling recommends new camshafts with new lifters (not required)RPM range 2,100-6,800+Overlap: 26Can...

Feuling Parts #1377 - Reaper Camshaft - 580 Series - Buell | XL (except RH Sportster)

Reaper Camshaft - 580 Series - Buell | XL (except RH Sportster)FeaturesDesigned for riders who want more horsepower and the powerband higher in the RPM rangeHigher compression also recommended, along with performance pushrods and liftersHigh-flow intake...

Feuling Parts #1390 - Camshaft - 518 Grind - Evolution

Requires Feuling pushrods.FeaturesDirect bolt-in replacement for EVO enginesCan be used with stock valve springs, pushrods and liftersWill respond well with performance exhaust and air cleanerWill also respond well with increased compression and cylinder...