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
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On Sale
S&S CYCLE Roller Rocker Arms 900-4065A
S&S CYCLE
MSRP: $649.95Now: $584.96Was: $649.95Forged 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...09270015- SKU:
- 09270015
- Availability:
- Ships Same Business Day
- Weight:
- 2.61 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- FORGED
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER
- UNITS:
- SET OF 4
- APPLICATION:
- EXHAUST
- MATERIAL:
- 8620 STEEL
- MOUNTING POSITION:
- FRONT
MSRP: $649.95Now: $584.96Was: $649.95 -
On Sale
S&S CYCLE Roller Rocker Arms - M8 900-1084
S&S CYCLE
MSRP: $674.95Now: $607.46Was: $674.95Forged 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...09270038- SKU:
- 09270038
- Availability:
- Ships Same Business Day
- Weight:
- 4.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- ROCKER ARM
- UNITS:
- SET OF 4
- MOUNTING POSITION:
- REAR
MSRP: $674.95Now: $607.46Was: $674.95Qty in Cart: 0Quantity:Price:MSRP: $674.95Now: $607.46Was: $674.95Subtotal: -
ROCKER LOCKERS Rocker Locker Kit - 84-00 Big Twin Evolution DK-RL-BTE
ROCKER LOCKERS
$24.95Centers the rocker plate eliminating different wear patterns on the rocker arm valve, Tapered design so that they lock themselves in and wedge the bolt shaft in place, Eliminates the gap between the rocker arm shaft and bolt, Will not cure a bad lifter,...09500929- SKU:
- 09500929
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BASE COLOR:
- BRASS
- RIDING STYLE:
- STREET
- TYPE:
- STOCK
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- SILVER
- UNITS:
- KIT
- COLOR/FINISH:
- WHITE
- BASE FINISH:
- NATURAL
- PRODUCT NAME:
- ROCKER LOCKER
$24.95 -
EASTERN MOTORCYCLE PARTS Rocker Arm Shaft Springs A-17483-57
EASTERN MOTORCYCLE PARTS
$9.40Made in the U.S.A.09270012- SKU:
- 09270012
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SPRING
- TYPE:
- ROCKER ARM SHAFT
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$9.40Qty in Cart: 0Quantity:Price:$9.40Subtotal: -
EASTERN MOTORCYCLE PARTS Rocker Arm Lock Nut A-7727
EASTERN MOTORCYCLE PARTS
$13.505/16"-24 x 1/2" hex style, Made in the U.S.A.09270020- SKU:
- 09270020
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- RIDING STYLE:
- STREET
- TYPE:
- LOCK
- PRODUCT NAME:
- NUT
- TYPE:
- ROCKER ARM
- UNITS:
- 10 PACK
$13.50 -
DRAG SPECIALTIES Rocker Arm Shaft 231986
DRAG SPECIALTIES
$11.28Rocker arm shaft for Harley Davidson models09270023- SKU:
- 09270023
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- APPLICATION:
- EXHAUST
- TYPE:
- ROCKER ARM
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SHAFT
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- FRONT
$11.28
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.
