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
$6.13Rocker arm shaft seals are critical to maintaining proper valve train geometry and preventing oil leakage that compromises engine performance. This complete rebuild kit eliminates the frustration of constant re-shimming and adjustment drift, giving you...09270005- 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
$18.49If you're running a classic Shovelhead and tired of constant valve train adjustments, this shim kit is your solution. Proper rocker arm shimming eliminates lift loss, prevents valvetrain noise, and ensures consistent performance between rebuilds. Once...09270004- 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: $59.95The S&S Cycle Rocker Arm Shafts are engineered to deliver consistent valve actuation and durability in high-performance Twin Cam applications. These precision-manufactured shafts maintain tight tolerances under sustained rpm and load, reducing valve...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: $1,279.95If you're rebuilding or upgrading your Evolution engine, quality rocker boxes are fundamental to reliable valve train operation and oil containment. S&S Cycle's die-cast rocker boxes deliver a positive O-ring seal that eliminates leaks while maintaining...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: $1,091.95A quality rocker box is fundamental to engine reliability and oil circulation in Twin Cam applications. S&S Cycle's die-cast design delivers a positive O-ring seal that eliminates leaks while maintaining the clean aesthetics of a custom build. Most...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: $1,091.95 -
On Sale
S&S CYCLE Rocker Arm Rebuild Kit 90-4104
S&S CYCLE
MSRP: $163.95Now: $147.56Was: $163.95If you're running an XL or Buell and want to maximize valve train reliability under high RPM conditions, the S&S CYCLE Rocker Arm Rebuild Kit 90-4104 delivers the precision engineering your engine demands. These forged rocker arms feature extended...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: $695.95Stock rocker arms are the weak link in high-revving Shovelhead engines—they flex under load, lose valve timing precision, and wear prematurely. S&S Cycle's Roller Rocker Arms replace that compromise with forged steel construction and 50% larger bushings,...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: $16.95A worn or damaged rocker arm shaft compromises valve train precision and can lead to catastrophic engine failure. The S&S Cycle rocker arm shaft restores OEM-spec alignment and clearances, ensuring consistent valve timing and reliable power delivery...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: $16.95 -
On Sale
S&S CYCLE Rocker Arm Bushing 90-4014
S&S CYCLE
MSRP: $14.95Now: $13.46Was: $14.95Rocker arm bushings are critical wear items that directly impact valve actuation precision and engine reliability. A worn bushing creates unwanted slack in your valve train, leading to inconsistent valve timing and potential valve float at high RPMs. The...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: $334.95If you're rebuilding a stock engine or planning modest performance gains, S&S Cycle's Non-Roller Rocker Arms deliver the durability and reliability you need without the complexity of needle bearings. The forged 8620 steel construction provides...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: $649.95Stock rocker arms limit your engine's potential, introducing flex and wear under high RPM stress. S&S Cycle's roller rocker arms deliver superior load distribution and durability through a .750" bushing design—50% larger than stock—engineered to handle...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: $84.95If you're rebuilding a stock or mildly modified engine, you need rocker arms that won't compromise reliability—and the S&S Cycle Forged Standard delivers exactly that. These 8620 steel forgings provide significantly greater strength than cast...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: $84.95If you're rebuilding a stock engine or planning mild performance upgrades, you need rocker arms that won't compromise reliability or force you into unnecessary spending. The S&S CYCLE Forged Standard Rocker Arm delivers the durability of premium...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: $84.95 -
On Sale
S&S CYCLE Rocker Arm Rebuild Kit - M8 900-1087
S&S CYCLE
MSRP: $167.95Now: $151.16Was: $167.95If you're running M8 Harley power and want rocker arms that can handle aggressive cam profiles and sustained high RPMs, the S&S Cycle Rebuild Kit delivers the strength and precision you need. The extended bushings and optimized oiling system reduce wear...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: $179.95S&S Cycle rocker arm shafts are precision-engineered components that directly impact valve train reliability and performance consistency in high-revving M8 engines. Proper rocker arm geometry ensures optimal valve actuation, reducing wear on valve stems...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: $179.95 -
On Sale
S&S CYCLE Rocker Arm Guardian Kit - M8 900-1092
S&S CYCLE
MSRP: $917.95Now: $826.16Was: $917.95Rocker arm wear is one of the most overlooked failure points in high-performance M8 engines, often leading to catastrophic valve train damage that sidelines your bike. The S&S CYCLE Rocker Arm Guardian Kit addresses this critical vulnerability by...09270042- 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
$85.44Rocker arms are critical to your engine's valve train geometry and timing precision. A worn or damaged unit throws off valve lift and duration, killing combustion efficiency and power output. This OEM-style replacement restores factory specifications and...DS193420- 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
$84.41Rocker arms are critical valve train components that directly impact your engine's breathing efficiency and overall performance reliability. A worn or damaged rear exhaust rocker arm forces your valvetrain out of proper geometry, leading to inconsistent...DS193421- 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
$84.41Rocker arm wear directly impacts valve timing precision and engine reliability—compromised rocker arms lead to inconsistent valve actuation, loss of power, and potential catastrophic engine damage. This DRAG SPECIALTIES replacement rocker arm restores...DS193422- 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
$84.41Worn or damaged rocker arms compromise valve timing and lift, directly killing horsepower and engine reliability. This OEM-style replacement restores proper valve actuation geometry, ensuring consistent performance whether you're street driving or on the...DS193423- 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.
