Harley Rocker Arms and Parts
Harley Bike Rocker Arms & Parts at JJ Motorsports
Strengthen your Harley's valvetrain with premium rocker arms and components from JJ Motorsports, featuring forged rockers, locker kits, and lock nuts for reduced deflection and reliable performance on Twin Cam, Evo, and Big Twin engines. These high-quality parts support aggressive cams and high-lift springs.
Shop Rocker Lockers, Eastern Motorcycle Parts, and S&S Cycle for proven durability. Explore related categories such as Harley engine for pushrods and valves, or Harley for rocker boxes and covers to complete your valvetrain upgrade.
Top Harley Rocker Arms & Parts
- Rocker Lockers Rocker Locker Kit Twin Cam 10-Pack DK-RL-TC-10 – 10-piece locker kit for Twin Cam rocker arms; eliminates deflection for high-lift cams.
- Eastern Motorcycle Parts Rocker Arm Lock Nut A-7727 – OEM-style lock nut for rocker shafts; fits Evo and Twin Cam rocker arms.
- S&S Cycle Forged Standard Rocker Arm 900-4119FA – Forged steel rocker arm; standard ratio for Big Twin and Sportster with superior strength.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
DRAG SPECIALTIES Rocker Arm Seal Kit - Big Twin 04-0988-1-HC
DRAG SPECIALTIES
$6.13Contains shims, spacers and seals to rebuild all four rocker arm shafts found in 66-84 Shovelhead engines, Rocker arm won’t come out of adjustment or need re-shimming, Only needs to be replaced with each valve job09270005- SKU:
- 09270005
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- SEAL KIT
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER ARM
- UNITS:
- 4 PACK
$6.13 -
DRAG SPECIALTIES Rocker Arm Shim Kit - Big Twin 04-0988-HC
DRAG SPECIALTIES
$18.49Contains shims, spacers and seals to rebuild all four rocker arm shafts found in 66-84 Shovelhead engines, Rocker arm won't come out of adjustment or need re-shimming, Only needs to be replaced with each valve job09270004- SKU:
- 09270004
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- UNITS:
- KIT
- MOUNTING POSITION:
- FRONT
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- ADJUSTER KIT
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER ARM SHAFT
$18.49Qty in Cart: 0Quantity:Price:$18.49Subtotal: -
On Sale
S&S CYCLE Rocker Arm Shafts - Twin Cam 90-4036
S&S CYCLE
MSRP: $59.95Now: $53.96Was: $59.95Made in the U.S.A.904036- SKU:
- 904036
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MOUNTING POSITION:
- FRONT
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SHAFT
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- TYPE:
- ROCKER ARM
- UNITS:
- SET OF 4
MSRP: $59.95Now: $53.96Was: $59.95 -
On Sale
S&S CYCLE Die Cast Rocker Box - Evolution 90-4095
S&S CYCLE
MSRP: $1,279.95Now: $1,151.96Was: $1,279.95Positive O-ring seal ensures leak-free operation, Can be installed with the stock engine in the frame in most applications, Include rocker boxes, gaskets and mounting bolts, Assembler must supply rocker shafts and rocker arms for all rocker boxes, Rocker...904095- SKU:
- 904095
- Availability:
- Ships Same Business Day
- Weight:
- 12.28 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- PAIR
- BASE FINISH:
- CHROME
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- ROCKER BOX
- RIDING STYLE:
- STREET
MSRP: $1,279.95Now: $1,151.96Was: $1,279.95 -
On Sale
S&S CYCLE Die Cast Rocker Box - Twin Cam 90-4110
S&S CYCLE
MSRP: $1,091.95Now: $982.76Was: $1,091.95Positive O-ring seal ensures leak-free operation, Can be installed with the stock engine in the frame in most applications, Include rocker boxes, gaskets and mounting bolts, Assembler must supply rocker shafts and rocker arms for all rocker boxes, Rocker...904110- SKU:
- 904110
- Availability:
- Ships Same Business Day
- Weight:
- 12.45 LBS
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- ROCKER BOX
- RIDING STYLE:
- STREET
- MATERIAL:
- DIE-CAST
- UNITS:
- PAIR
MSRP: $1,091.95Now: $982.76Was: $1,091.95Qty in Cart: 0Quantity:Price:MSRP: $1,091.95Now: $982.76Was: $1,091.95Subtotal: -
On Sale
S&S CYCLE Rocker Arm Rebuild Kit 90-4104
S&S CYCLE
MSRP: $163.95Now: $147.56Was: $163.95Forged from 8620 steel, heat-treated then shot-peened for additional strength and durability, Rocker arms have .75" long bushings instead of the .50" long bushings found on most other rocker arms, Feature a modified lubrication system with unrestricted...09270001- SKU:
- 09270001
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- REBUILD KIT
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- FRONT
- TYPE:
- ROCKER ARM
- UNITS:
- KIT
MSRP: $163.95Now: $147.56Was: $163.95 -
On Sale
S&S CYCLE Roller Rocker Arms 900-4098A
S&S CYCLE
MSRP: $695.95Now: $626.36Was: $695.95Machined from 4140 forged steel and heat treated for maximum strength, Feature the exclusive .750" long S&S rocker arm bushing which provides 50% more load bearing surface than stock .500" bushings, Can be oiled through pushrods when used with S&S...09270028- SKU:
- 09270028
- Availability:
- Ships Same Business Day
- Weight:
- 2.86 LBS
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- ROCKER ARM
- STYLE:
- FORGED
- MATERIAL:
- 8620 STEEL
- UNITS:
- 4 PACK
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER
- MOUNTING POSITION:
- REAR
MSRP: $695.95Now: $626.36Was: $695.95 -
On Sale
S&S CYCLE Rocker Arm Shaft - Twin Cam/XL 90-4006
S&S CYCLE
MSRP: $16.95Now: $15.26Was: $16.95Made in the U.S.A.09270029- SKU:
- 09270029
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- SHAFT
- TYPE:
- ROCKER ARM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $16.95Now: $15.26Was: $16.95Qty in Cart: 0Quantity:Price:MSRP: $16.95Now: $15.26Was: $16.95Subtotal: -
On Sale
S&S CYCLE Rocker Arm Bushing 90-4014
S&S CYCLE
MSRP: $14.95Now: $13.46Was: $14.95Replacement bushing for S&S roller rocker arms, Made in the U.S.A.09270030- SKU:
- 09270030
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- FRONT
- TYPE:
- ROCKER ARM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $14.95Now: $13.46Was: $14.95 -
On Sale
S&S CYCLE Non-Roller Rocker Arms 900-4119A
S&S CYCLE
MSRP: $334.95Now: $301.46Was: $334.95An economical solution for stock rebuilds, and mild performance upgrades, Forged from 8620 steel for greater strength than stock or cast steel, Feature the same .750" long rocker shaft bushings as S&S Roller Rockers: longer bushing provides 50% more load...09270014- SKU:
- 09270014
- Availability:
- Ships Same Business Day
- Weight:
- 2.76 LBS
- RIDING STYLE:
- STREET
- TYPE:
- STANDARD
- MATERIAL:
- STEEL
- APPLICATION:
- EXHAUST
- MATERIAL:
- FORGED
- PRODUCT NAME:
- ROCKER ARM
- STYLE:
- FORGED
- UNITS:
- SET OF 4
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- REAR
MSRP: $334.95Now: $301.46Was: $334.95 -
On Sale
S&S CYCLE Roller Rocker Arms 900-4320A
S&S CYCLE
MSRP: $649.95Now: $584.96Was: $649.95Machined from 4140 forged steel and heat treated for maximum strength, Feature the exclusive .750" long S&S rocker arm bushing which provides 50% more load bearing surface than stock .500" bushings, Can be oiled through pushrods when used with S&S...09270016- SKU:
- 09270016
- Availability:
- Ships Same Business Day
- Weight:
- 2.61 LBS
- MATERIAL:
- 4140 STEEL
- TYPE:
- ROLLER
- MOUNTING POSITION:
- FRONT
- UNITS:
- 4 PACK
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
- STYLE:
- FORGED
MSRP: $649.95Now: $584.96Was: $649.95 -
On Sale
S&S CYCLE Forged Standard Rocker Arm 900-4119FA
S&S CYCLE
MSRP: $84.95Now: $76.46Was: $84.95An economical solution for stock rebuilds, and mild performance upgrades, Forged from 8620 steel for greater strength than stock or cast steel, Feature the same .750" long rocker shaft bushings as S&S Roller Rockers: longer bushing provides 50% more load...09270032- SKU:
- 09270032
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MOUNTING POSITION:
- FRONT INTAKE
- PRODUCT NAME:
- ROCKER ARM
- MATERIAL:
- 8620 STEEL
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- REAR EXHAUST
- UNITS:
- EACH
MSRP: $84.95Now: $76.46Was: $84.95 -
On Sale
S&S CYCLE Forged Standard Rocker Arm 900-4119RA
S&S CYCLE
MSRP: $84.95Now: $76.46Was: $84.95An economical solution for stock rebuilds, and mild performance upgrades, Forged from 8620 steel for greater strength than stock or cast steel, Feature the same .750" long rocker shaft bushings as S&S Roller Rockers: longer bushing provides 50% more load...09270033- SKU:
- 09270033
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MOUNTING POSITION:
- REAR INTAKE
- PRODUCT NAME:
- ROCKER ARM
- MOUNTING POSITION:
- FRONT EXHAUST
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- 8620 STEEL
MSRP: $84.95Now: $76.46Was: $84.95Qty in Cart: 0Quantity:Price:MSRP: $84.95Now: $76.46Was: $84.95Subtotal: -
On Sale
S&S CYCLE Rocker Arm Rebuild Kit - M8 900-1087
S&S CYCLE
MSRP: $167.95Now: $151.16Was: $167.95Forged from 8620 steel, heat-treated then shot-peened for additional strength and durability, Rocker arms have .75" long bushings instead of the .50" long bushings found on most other rocker arms, Feature a modified lubrication system with unrestricted...09270039- SKU:
- 09270039
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- ROCKER ARM
- UNITS:
- EACH
MSRP: $167.95Now: $151.16Was: $167.95 -
On Sale
S&S CYCLE Rocker Arm Shafts - M8 900-1090
S&S CYCLE
MSRP: $179.95Now: $161.96Was: $179.95Made in the U.S.A.09270041- SKU:
- 09270041
- Availability:
- Ships Same Business Day
- Weight:
- 1.71 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- ROCKER ARM
- UNITS:
- SET
MSRP: $179.95Now: $161.96Was: $179.95Qty in Cart: 0Quantity:Price:MSRP: $179.95Now: $161.96Was: $179.95Subtotal: -
On Sale
S&S CYCLE Rocker Arm Guardian Kit - M8 900-1092
S&S CYCLE
MSRP: $917.95Now: $826.16Was: $917.95S&S CYCLE Rocker Arm Guardian Kit - M809270042- SKU:
- 09270042
- Availability:
- Ships Same Business Day
- Weight:
- 8.86 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- ROCKER ARM
MSRP: $917.95Now: $826.16Was: $917.95Qty in Cart: 0Quantity:Price:MSRP: $917.95Now: $826.16Was: $917.95Subtotal: -
DRAG SPECIALTIES Replacement Rocker Arm - Front Exhaust - XL 1739457A-BX-LB1
DRAG SPECIALTIES
$85.44OEM style rocker armsDS193420- SKU:
- DS193420
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- MOUNTING POSITION:
- FRONT EXHAUST
- UNITS:
- PAIR
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
$85.44 -
DRAG SPECIALTIES Replacement Rocker Arm - Rear Exhaust - XL 1739557A-BX-LB1
DRAG SPECIALTIES
$84.41OEM style rocker armsDS193421- SKU:
- DS193421
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- REAR EXHAUST
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- APPLICATION:
- EXHAUST
$84.41 -
DRAG SPECIALTIES Replacement Rocker Arm - Front Intake - XL 1739657A-BX-LB1
DRAG SPECIALTIES
$84.41OEM style rocker armsDS193422- SKU:
- DS193422
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- UNITS:
- PAIR
- APPLICATION:
- EXHAUST
- MOUNTING POSITION:
- FRONT INTAKE
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
$84.41 -
DRAG SPECIALTIES Replacement Rocker Arm - Rear Intake - XL 1739757A-BX-LB1
DRAG SPECIALTIES
$84.41OEM style rocker armsDS193423- SKU:
- DS193423
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- MOUNTING POSITION:
- REAR INTAKE
- UNITS:
- PAIR
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
$84.41
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Engine Rocker Arms and Parts
- Compatibility: Ensure rocker arms and parts fit your Harley's engine type (e.g., Twin Cam, Evo, Big Twin, M8) and model (e.g., Softail, Dyna, Touring). Use the vehicle selector for year-specific matches to avoid valvetrain or clearance issues.
- Type of Use: For high-lift cams or performance riding, select adjustable rocker arms with higher ratios (1.625:1); standard rebuilds benefit from OEM-style arms and bushings for reliable operation in daily conditions.
- Components and Upgrades: Choose rocker arms (forged/roller tip), shafts, supports, bushings, or kits; upgrade to high-ratio arms or bronze bushings for reduced friction and increased durability.
- Brand and Quality: Opt for Feuling for HP+ rocker arms with oil passages, S&S Cycle for forged arms and shafts, Andrews for high-ratio options, or Colony for bushing kits. Prioritize forged steel or billet aluminum for strength and longevity.
- Installation and Cost: Parts are designed for DIY valvetrain upgrades with basic tools; prices range from $20 for bushings to $400 for rocker arm kits—factor in USA-made quality and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models and engines do these rocker arms and parts support? Parts support Twin Cam, Evo, Big Twin, M8, and models like Softail, Dyna, Touring—use the year/make/model filter for exact compatibility.
- How do high-ratio rocker arms improve performance? They increase valve lift (e.g., 1.625:1 ratio) for better airflow and power without changing cams, ideal for performance upgrades.
- What is typically included in a rocker arm kit? Kits include arms, shafts, supports, bushings, and hardware for complete valvetrain rebuilds.
- Are bronze bushings better than stock? Yes, they reduce friction and wear, with options for press-fit or roller bearings in high-load applications.
- What if a part doesn't fit my Harley? Verify engine type, ratio, and model before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related engine parts? Yes—explore valves, pushrods, or cams in the Harley engine category to complement your rocker arm upgrade for a full valvetrain refresh.
