Harley Engine
Harley Bike Engine Parts at JJ Motorsports
Rebuild and boost your Harley's engine with premium parts from JJ Motorsports. Our inventory features complete gasket sets, piston kits, oil filters, pushrod tubes, and coolers designed for maximum strength, leak-free sealing, and high-performance in extreme conditions. Compatible with Big Twins, Softail, Touring, and more, these components support top-end overhauls, oil management, and durability for street rides or custom builds.
Shop trusted brands like Drag Specialties for magnetic filters and Wiseco for forged pistons. Explore related categories such as Harley air and fuel for carb tuning or Harley drivetrain for transmission upgrades.
Top Harley Engine Products
- DRAG SPECIALTIES Magnetic Ring Oil Filter - Chrome - 3-1/4" 140003HP-BX18 – Captures metal particles with pressure relief.
- WISECO Piston Kit .010 .883 XL K1656 – Forged aluminum with rings, pins, and circlips for rebuilds.
- DRAG SPECIALTIES Pushrod Tube Kit Big Twin 75711 – Includes tubes, clips, cups, and springs for complete engine.
- ULTRACOOL Below Regulator Mount Oil Cooler Stainless Steel RF-2CSS – Fits S&S 111/124/143 engines with machined adapter.
- PAUGHCO Ribbed Teardrop Air Cleaner 701-200 – Chrome-plated aluminum with mini filter.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
On Sale
KIBBLEWHITE Intake Valve 20-20965
KIBBLEWHITE
MSRP: $48.58Now: $37.01Was: $48.58If you're building or rebuilding a high-performance engine, valve quality directly impacts reliability and power delivery. The KIBBLEWHITE Black Diamond™ Intake Valve maximizes flow efficiency while...09262997- SKU:
- 09262997
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- STEM DIAMETER IMPERIAL:
- 0.3108'
- LENGTH IMPERIAL:
- 4.510'
- TULIP ANGLE:
- 25°
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 51.31 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
MSRP: $48.58Now: $37.01Was: $48.58 -
On Sale
KIBBLEWHITE Exhaust Valve 20-20970
KIBBLEWHITE
MSRP: $48.58Now: $37.01Was: $48.58Valve longevity directly impacts engine reliability and performance consistency—especially in high-stress racing applications where factory components fall short. The KIBBLEWHITE Black Diamond™...09262998- SKU:
- 09262998
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- EXHAUST
- HEAD DIAMETER METRIC:
- 40.89 MM
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- LENGTH IMPERIAL:
- 4.565'
- TULIP ANGLE:
- 25°
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- STEM DIAMETER IMPERIAL:
- 0.3106'
MSRP: $48.58Now: $37.01Was: $48.58 -
On Sale
KIBBLEWHITE Spring Kit - .610" - Evolution/Twin Cam 20-21300
KIBBLEWHITE
MSRP: $197.95Now: $166.49Was: $197.95Stock titanium intake valves wear prematurely in high-performance applications, leading to costly head rebuilds and downtime. The KIBBLEWHITE Spring Kit converts your Evolution or Twin Cam head to...09262999- SKU:
- 09262999
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- STREET
- SPRING LIFT IMPERIAL:
- 0.610'
- SPRING SEAT PRESSURE:
- 175 LB
- APPLICATION:
- INTAKE
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- SPRING LIFT:
- 0,610'
- SPRING OPEN PRESSURE:
- 400 LB
MSRP: $197.95Now: $166.49Was: $197.95 -
On Sale
KIBBLEWHITE Spring Kit - .610" - Twin Cam 20-21400
KIBBLEWHITE
MSRP: $197.95Now: $166.49Was: $197.95If you're running a Twin Cam engine and want to maximize valvetrain longevity without sacrificing reliability, the KIBBLEWHITE Spring Kit delivers a stainless steel conversion that outperforms OEM...09263000- SKU:
- 09263000
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- PRODUCT NAME:
- SPRING KIT
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE
- UNITS:
- KIT
- SPRING LIFT IMPERIAL:
- 0.610'
- SPRING SEAT PRESSURE:
- 175 LB
- APPLICATION:
- EXHAUST
- SPRING LIFT:
- 0,610'
- SPRING OPEN PRESSURE:
- 400 LB
MSRP: $197.95Now: $166.49Was: $197.95 -
On Sale
KIBBLEWHITE Spring Kit - .660" - Evolution/Twin Cam 20-21500
KIBBLEWHITE
MSRP: $221.94Now: $186.67Was: $221.94If you're running Evolution or Twin Cam heads in a high-performance application, valve degradation is a real threat to reliability and longevity. The KIBBLEWHITE Spring Kit replaces your factory...09263001- SKU:
- 09263001
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- APPLICATION:
- EXHAUST
- SPRING LIFT IMPERIAL:
- 0.660'
- APPLICATION:
- INTAKE
- SPRING LIFT:
- 0,660'
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPRING KIT
- SPRING OPEN PRESSURE:
- 371 LB
- SPRING SEAT PRESSURE:
- 178 LB
- UNITS:
- KIT
MSRP: $221.94Now: $186.67Was: $221.94 -
On Sale
KIBBLEWHITE Exhaust Valve 20-21017H
KIBBLEWHITE
MSRP: $35.22Now: $29.50Was: $35.22Exhaust valves endure extreme temperatures, pressure cycles, and chemical corrosion—making OEM replacements a critical maintenance point for sustained engine performance. KIBBLEWHITE's Black Diamond™...09263018- SKU:
- 09263018
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- LENGTH IMPERIAL:
- 4.050'
- STEM DIAMETER IMPERIAL:
- 0.2342'
- HEAD DIAMETER METRIC:
- 32.61 MM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 24°
MSRP: $35.22Now: $29.50Was: $35.22 -
On Sale
KIBBLEWHITE Exhaust Valve - M8 20-21018K
KIBBLEWHITE
MSRP: $41.29Now: $37.16Was: $41.29A precision exhaust valve is critical to maximizing your engine's breathing efficiency and maintaining valve integrity under extreme combustion pressures. The Kibblewhite M8 20-21018K is engineered...09263019- SKU:
- 09263019
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- HEAD DIAMETER METRIC:
- 32.61 MM
- MODEL:
- WHITE DIAMOND™
- TULIP ANGLE:
- 24°
- APPLICATION:
- EXHAUST
- MATERIAL:
- INCONEL®
- PRODUCT NAME:
- VALVE
- LENGTH IMPERIAL:
- 4.050'
- RIDING STYLE:
- STREET
- STEM DIAMETER IMPERIAL:
- 0.2342'
- HEAD DIAMETER IMPERIAL:
- 1.284'
- UNITS:
- EACH
MSRP: $41.29Now: $37.16Was: $41.29 -
On Sale
KIBBLEWHITE Intake Valve Guide - M8 20-21020M
KIBBLEWHITE
MSRP: $15.10Now: $13.59Was: $15.10If you're rebuilding a high-revving engine or restoring a classic with modern reliability in mind, valve guides are non-negotiable—they control oil consumption, maintain proper valve clearance, and...09263020- SKU:
- 09263020
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- COLOR/FINISH:
- BRONZE
- INSIDE DIAMETER IMPERIAL:
- 0.2347'
- OUTSIDE DIAMETER IMPERIAL:
- 0.4750'
- SIZE IMPERIAL:
- STANDARD
- BASE COLOR:
- BROWN
- PRODUCT NAME:
- VALVE GUIDE
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE
- UNITS:
- EACH
- MATERIAL:
- MANGANESE-BRONZE
MSRP: $15.10Now: $13.59Was: $15.10 -
On Sale
KIBBLEWHITE Intake Valve Guide - M8 - +0.001 20-21021M
KIBBLEWHITE
MSRP: $15.10Now: $13.59Was: $15.10Valve guide wear is one of the most common culprits behind oil consumption, poor sealing, and power loss in high-performance engines. The KIBBLEWHITE Intake Valve Guide delivers precision-engineered...09263021- SKU:
- 09263021
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- BASE COLOR:
- BROWN
- MATERIAL:
- MANGANESE-BRONZE
- OUTSIDE DIAMETER IMPERIAL:
- 0.4760'
- SIZE IMPERIAL:
- OVERSIZE (+0.001')
- PRODUCT NAME:
- VALVE GUIDE
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE
- UNITS:
- EACH
- COLOR/FINISH:
- BRONZE
- INSIDE DIAMETER IMPERIAL:
- 0.2347'
MSRP: $15.10Now: $13.59Was: $15.10 -
On Sale
KIBBLEWHITE Intake Valve Guide - M8 - +0.002 20-21022M
KIBBLEWHITE
MSRP: $15.10Now: $13.59Was: $15.10Valve guide wear is one of the most common culprits behind oil consumption, poor sealing, and reduced power—especially in high-revving or forced-induction engines. The KIBBLEWHITE M8 Intake Valve...09263022- SKU:
- 09263022
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- VALVE GUIDE
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE
- COLOR/FINISH:
- BRONZE
- INSIDE DIAMETER IMPERIAL:
- 0.2347'
- OUTSIDE DIAMETER IMPERIAL:
- 0,4770'
- UNITS:
- EACH
- BASE COLOR:
- BROWN
- MATERIAL:
- C630 BRONZE
- SIZE IMPERIAL:
- OVERSIZE (+0.002')
MSRP: $15.10Now: $13.59Was: $15.10 -
On Sale
KIBBLEWHITE Exhaust Valve Guide 20-21030M
KIBBLEWHITE
MSRP: $15.10Now: $13.59Was: $15.10Valve guides are critical to engine longevity and flow efficiency—worn guides cause oil consumption, loss of compression, and poor combustion. The KIBBLEWHITE 20-21030M is precision-machined from...09263023- SKU:
- 09263023
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- EXHAUST
- COLOR/FINISH:
- BRONZE
- INSIDE DIAMETER IMPERIAL:
- 0.2342'
- UNITS:
- EACH
- BASE COLOR:
- BROWN
- OUTSIDE DIAMETER IMPERIAL:
- 0.4750'
- PRODUCT NAME:
- VALVE GUIDE
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- STANDARD
- MATERIAL:
- MANGANESE-BRONZE
MSRP: $15.10Now: $13.59Was: $15.10 -
On Sale
KIBBLEWHITE Valve Seal 71046-8
KIBBLEWHITE
MSRP: $20.52Now: $18.47Was: $20.52Valve seals are a critical wear item that directly impact oil consumption, emissions, and engine longevity. The KIBBLEWHITE Valve Seal 71046-8 delivers OEM-equivalent performance with superior...09263027- SKU:
- 09263027
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- SEAL
- TYPE:
- VALVE
- OUTSIDE DIAMETER IMPERIAL:
- 1.170'
- STEM DIAMETER METRIC:
- 6.00 MM
- UNITS:
- SET OF 8
- MATERIAL:
- VITON
MSRP: $20.52Now: $18.47Was: $20.52 -
On Sale
KIBBLEWHITE Spring Kit - .655" 20-20060
KIBBLEWHITE
MSRP: $360.75Now: $324.68Was: $360.75High-lift camshaft applications demand valve spring technology that can handle sustained pressure without compromise. The KIBBLEWHITE Spring Kit delivers the control and reliability you need when...09262935- SKU:
- 09262935
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- APPLICATION:
- EXHAUST
- COLLAR MATERIAL:
- TITANIUM
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- SPRING LIFT:
- 0,655'
- TYPE:
- VALVE
- RIDING STYLE:
- STREET
- SPRING OPEN PRESSURE:
- 465 LB
- PRODUCT NAME:
- SPRING KIT
- SPRING LIFT IMPERIAL:
- 0.655'
- SPRING SEAT PRESSURE:
- 190 LB
- UNITS:
- KIT
MSRP: $360.75Now: $324.68Was: $360.75 -
On Sale
KIBBLEWHITE Spring Kit - .655" 20-20081
KIBBLEWHITE
MSRP: $244.39Now: $205.58Was: $244.39If you're pushing your engine to its limits, valve float becomes your enemy—and this is where a quality spring kit separates winners from the rest. The KIBBLEWHITE Spring Kit is engineered to...09262936- SKU:
- 09262936
- Availability:
- Ships Same Business Day
- Weight:
- 1.71 LBS
- APPLICATION:
- INTAKE
- COLLAR MATERIAL:
- STEEL
- PRODUCT NAME:
- SPRING KIT
- SPRING LIFT IMPERIAL:
- 0.655'
- SPRING SEAT PRESSURE:
- 185 IB
- MATERIAL:
- STEEL
- SPRING LIFT:
- 0,655'
- TYPE:
- VALVE
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- SPRING OPEN PRESSURE:
- 450 LB
MSRP: $244.39Now: $205.58Was: $244.39 -
On Sale
KIBBLEWHITE Intake Valve Guide 20-20860M
KIBBLEWHITE
MSRP: $15.10Now: $13.59Was: $15.10Valve guide wear is a silent killer of engine performance and reliability. The KIBBLEWHITE Intake Valve Guide 20-20860M delivers precision-machined construction with superior heat conductivity to...09262937- SKU:
- 09262937
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- BRONZE
- INSIDE DIAMETER IMPERIAL:
- 0.3100'
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- STANDARD
- APPLICATION:
- INTAKE
- OUTSIDE DIAMETER IMPERIAL:
- 0.5625'
- PRODUCT NAME:
- VALVE GUIDE
- UNITS:
- EACH
MSRP: $15.10Now: $13.59Was: $15.10 -
On Sale
KIBBLEWHITE Exhaust Valve Guide 20-20870M
KIBBLEWHITE
MSRP: $15.10Now: $13.59Was: $15.10If you're rebuilding a cylinder head, valve guide quality directly impacts long-term reliability and performance. KIBBLEWHITE's manganese bronze guides deliver superior heat conductivity to keep...09262940- SKU:
- 09262940
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- INSIDE DIAMETER IMPERIAL:
- 0.3100'
- MATERIAL:
- BRONZE
- OUTSIDE DIAMETER IMPERIAL:
- 0.5625'
- PRODUCT NAME:
- VALVE GUIDE
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
MSRP: $15.10Now: $13.59Was: $15.10 -
On Sale
KIBBLEWHITE Exhaust Valve Guide 20-20872M
KIBBLEWHITE
MSRP: $15.10Now: $13.59Was: $15.10If you're rebuilding a cylinder head, valve guide wear is a common culprit behind poor sealing, excessive oil consumption, and reduced compression. KIBBLEWHITE's manganese bronze guides deliver the...09262942- SKU:
- 09262942
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- BRONZE
- APPLICATION:
- EXHAUST
- INSIDE DIAMETER IMPERIAL:
- 0.3100'
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- OVERSIZE (+0.002')
- OUTSIDE DIAMETER IMPERIAL:
- 0.5645'
- PRODUCT NAME:
- VALVE GUIDE
- UNITS:
- EACH
MSRP: $15.10Now: $13.59Was: $15.10 -
On Sale
KIBBLEWHITE Intake Valve 20-20900
KIBBLEWHITE
MSRP: $48.58Now: $37.01Was: $48.58If you're running a high-revving engine that demands reliability under sustained load, valve wear is a critical failure point. The Kibblewhite 20-20900 intake valve eliminates that weak link with a...09262943- SKU:
- 09262943
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- STREET
- STEM DIAMETER IMPERIAL:
- 0.3108'
- APPLICATION:
- INTAKE
- LENGTH IMPERIAL:
- 4.480'
- TULIP ANGLE:
- 24°
- HEAD DIAMETER IMPERIAL:
- 2.150'
- UNITS:
- EACH
MSRP: $48.58Now: $37.01Was: $48.58 -
On Sale
KIBBLEWHITE Intake Valve 20-20905
KIBBLEWHITE
MSRP: $48.58Now: $37.01Was: $48.58If you're building or rebuilding an engine that demands reliability under sustained high RPM operation, valve wear is a critical failure point that directly impacts longevity and performance. The...09262944- SKU:
- 09262944
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- HEAD DIAMETER IMPERIAL:
- 1.990'
- LENGTH IMPERIAL:
- 4.440'
- RIDING STYLE:
- STREET
- STEM DIAMETER IMPERIAL:
- 0.3108'
- TULIP ANGLE:
- 25°
- APPLICATION:
- INTAKE
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
MSRP: $48.58Now: $37.01Was: $48.58 -
On Sale
KIBBLEWHITE Intake Valve 20-20910
KIBBLEWHITE
MSRP: $48.58Now: $37.01Was: $48.58If you're running high-RPM applications or restoring a classic engine, valve durability directly impacts your reliability and performance window. The KIBBLEWHITE Intake Valve 20-20910 uses a nitrided...09262945- SKU:
- 09262945
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- STREET
- LENGTH IMPERIAL:
- 4.440'
- STEM DIAMETER IMPERIAL:
- 0.3108'
- TULIP ANGLE:
- 25°
- APPLICATION:
- INTAKE
- HEAD DIAMETER IMPERIAL:
- 1.940'
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
MSRP: $48.58Now: $37.01Was: $48.58
