Harley Cylinders and Parts
Harley Bike Cylinders & Parts at JJ Motorsports
Boost displacement and performance with premium cylinders and parts from JJ Motorsports, featuring big-bore kits, stud sets, and precision-machined cylinders for Sportster, Big Twin, Evo, and M8 engines. These high-quality components deliver reliable compression and perfect fit.
Shop Colony and Revolution Performance for proven durability. Explore related categories such as Harley engine for pistons and gaskets, or Harley for cams and heads to complete your big-bore build.
Top Harley Cylinders & Parts
- Colony Cylinder Stud Set 9424-8 – Chrome-plated cylinder stud kit; high-strength for Big Twin and Evo heads with perfect thread engagement.
- Revolution Performance LLC Cylinder Kit RP201-101W – 101ci big-bore cylinder kit; complete with pistons for Twin Cam performance upgrades.
- Revolution Performance LLC Cylinder Kit RP201-608W – 608ci cylinder kit for Sportster; massive displacement with matching pistons for serious power.
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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COLONY Cylinder Stud Set 8858-8
COLONY
$37.95Heat-treated for strength and durability, Equal or surpass original equipment, Made in the U.S.A.DS189954- SKU:
- DS189954
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- TYPE:
- CYLINDER
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- STUD SET
- RIDING STYLE:
- STREET
- UNITS:
- 8 PACK
$37.95 -
COLONY Cylinder Stud Set 9424-8
COLONY
$101.95Heat-treated for strength and durability, Equal or surpass original equipmentDS189953- SKU:
- DS189953
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- PRODUCT NAME:
- STUD SET
- RIDING STYLE:
- STREET
- UNITS:
- 8 PACK
- TYPE:
- CYLINDER
$101.95 -
COLONY Cylinder Stud Set 9507-8
COLONY
$88.95Heat-treated for strength and durability, Equal or surpass original equipmentDS189952- SKU:
- DS189952
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CYLINDER
- UNITS:
- 8 PACK
- PRODUCT NAME:
- STUD SET
$88.95 -
EASTERN MOTORCYCLE PARTS Cylinder Base Studs - XL A-16830-54
EASTERN MOTORCYCLE PARTS
$10.952-5/16” long, Sold in a set of four for one cylinder, Made in the U.S.A.09310317- SKU:
- 09310317
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- STUD SET
- UNITS:
- 4 PACK
- TYPE:
- CYLINDER
- RIDING STYLE:
- STREET
$10.95 -
COLONY Cylinder Stud Set - 1930-1977 Big Twin 8856-8
COLONY
$39.95Heat-treated for strength and durability, Equal or surpass original equipment, Made in the U.S.A.DS189956- SKU:
- DS189956
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- UNITS:
- 8 PACK
- TYPE:
- CYLINDER
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- STUD SET
- RIDING STYLE:
- STREET
$39.95 -
COLONY Cylinder Stud Set - 1978-1984 Big Twin 8857-8
COLONY
$39.95Heat-treated for strength and durability, Equal or surpass original equipment, Made in the U.S.A.DS189955- SKU:
- DS189955
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- TYPE:
- CYLINDER
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- STUD SET
- RIDING STYLE:
- STREET
- UNITS:
- 8 PACK
$39.95Qty in Cart: 0Quantity:Price:$39.95Subtotal: -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-101W
REVOLUTION PERFORMANCE, LLC
$1,479.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311026- SKU:
- 09311026
- Availability:
- Ships Same Business Day
- Weight:
- 22.71 LBS
- STROKE LENGTH IMPERIAL:
- 4'
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.3:1
- DISPLACEMENT:
- 98'
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.9375'
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- CYLINDER KIT
$1,479.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-110W
REVOLUTION PERFORMANCE, LLC
$1,479.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311028- SKU:
- 09311028
- Availability:
- Ships Same Business Day
- Weight:
- 22.71 LBS
- COLOR/FINISH:
- NATURAL
- COMPRESSION RATIO IMPERIAL:
- 9.3:1
- BORE SIZE IMPERIAL:
- 3.9375'
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 98'
- PRODUCT NAME:
- CYLINDER KIT
- STROKE LENGTH IMPERIAL:
- 4'
- UNITS:
- KIT
$1,479.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-111W
REVOLUTION PERFORMANCE, LLC
$1,479.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311029- SKU:
- 09311029
- Availability:
- Ships Same Business Day
- Weight:
- 22.81 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.3:1
- BORE SIZE IMPERIAL:
- 3.9375'
- COLOR/FINISH:
- BLACK
- UNITS:
- KIT
- COLOR/FINISH:
- HIGHLIGHTED FINS
- PRODUCT NAME:
- CYLINDER KIT
- STROKE LENGTH IMPERIAL:
- 4'
- DISPLACEMENT:
- 98'
- RIDING STYLE:
- STREET
$1,479.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-140TM
REVOLUTION PERFORMANCE, LLC
$1,599.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311036- SKU:
- 09311036
- Availability:
- Ships Same Business Day
- Weight:
- 21.86 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-5/8'
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 4.125'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- DISPLACEMENT:
- 124'
- PRODUCT NAME:
- CYLINDER KIT
$1,599.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-608W
REVOLUTION PERFORMANCE, LLC
$1,529.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311041- SKU:
- 09311041
- Availability:
- Ships Same Business Day
- Weight:
- 24.41 LBS
- BORE SIZE IMPERIAL:
- 4.250'
- COLOR/FINISH:
- BLACK
- COMPRESSION RATIO IMPERIAL:
- 11.3:1
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-1/2'
- DISPLACEMENT:
- 128'
- UNITS:
- KIT
$1,529.95Qty in Cart: 0Quantity:Price:$1,529.95Subtotal: -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-171W
REVOLUTION PERFORMANCE, LLC
$1,529.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311042- SKU:
- 09311042
- Availability:
- Ships Same Business Day
- Weight:
- 21.26 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 4.125'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- PRODUCT NAME:
- CYLINDER KIT
- DISPLACEMENT:
- 117'
- STROKE LENGTH IMPERIAL:
- 4-3/8'
$1,529.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-171WG
REVOLUTION PERFORMANCE, LLC
$1,529.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311043- SKU:
- 09311043
- Availability:
- Ships Same Business Day
- Weight:
- 21.31 LBS
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- COLOR/FINISH:
- GRANITE
- COLOR/FINISH:
- HIGHLIGHTED FINS
- DISPLACEMENT:
- 117'
- BORE SIZE IMPERIAL:
- 4.125'
- UNITS:
- KIT
$1,529.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-172WB
REVOLUTION PERFORMANCE, LLC
$1,529.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311044- SKU:
- 09311044
- Availability:
- Ships Same Business Day
- Weight:
- 21.51 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- HIGHLIGHTED FINS
- DISPLACEMENT:
- 117'
- BORE SIZE IMPERIAL:
- 4.125'
- UNITS:
- KIT
- STROKE LENGTH IMPERIAL:
- 4-3/8'
$1,529.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-129W
REVOLUTION PERFORMANCE, LLC
$1,599.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311048- SKU:
- 09311048
- Availability:
- Ships Same Business Day
- Weight:
- 21.21 LBS
- BORE SIZE IMPERIAL:
- 4.250'
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- HIGHLIGHTED FINS
- DISPLACEMENT:
- 131'
- STROKE LENGTH IMPERIAL:
- 4-5/8'
- UNITS:
- KIT
$1,599.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-135W
REVOLUTION PERFORMANCE, LLC
$1,599.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311049- SKU:
- 09311049
- Availability:
- Ships Same Business Day
- Weight:
- 21.26 LBS
- DISPLACEMENT:
- 131'
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 4.250'
- COLOR/FINISH:
- GRANITE
- COLOR/FINISH:
- HIGHLIGHTED FINS
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-5/8'
$1,599.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-611W
REVOLUTION PERFORMANCE, LLC
$1,899.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311050- SKU:
- 09311050
- Availability:
- Ships Same Business Day
- Weight:
- 23.56 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- BORE SIZE IMPERIAL:
- 4.500'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- UNITS:
- KIT
- DISPLACEMENT:
- 139'
$1,899.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-616W
REVOLUTION PERFORMANCE, LLC
$1,899.95REVOLUTION PERFORMANCE, LLC Cylinder Kit09311052- SKU:
- 09311052
- Availability:
- Ships Same Business Day
- Weight:
- 23.51 LBS
- COLOR/FINISH:
- BLACK
- DISPLACEMENT:
- 143'
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-1/2'
- BORE SIZE IMPERIAL:
- 4.500'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- UNITS:
- KIT
$1,899.95Qty in Cart: 0Quantity:Price:$1,899.95Subtotal: -
REVOLUTION PERFORMANCE, LLC Cylinder Kit - 85" - Natural Silver RP201-213W
REVOLUTION PERFORMANCE, LLC
$1,479.95Revolution™ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide electroplated bores, which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps, and a longer lifespan, True bolt-on kit that...09311057- SKU:
- 09311057
- Availability:
- Ships Same Business Day
- Weight:
- 20.96 LBS
- COLOR/FINISH:
- SILVER
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3-9/16'
- PRODUCT NAME:
- BIG BORE CYLINDER KIT
- FEATURES:
- FLAT TOP
- RIDING STYLE:
- STREET
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- DISPLACEMENT:
- 85'
$1,479.95 -
REVOLUTION PERFORMANCE, LLC Cylinder Kit - 85" - Black with Highlighted Fins RP201-212W
REVOLUTION PERFORMANCE, LLC
$1,479.95Revolution™ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide electroplated bores, which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps, and a longer lifespan, True bolt-on kit that...09311058- SKU:
- 09311058
- Availability:
- Ships Same Business Day
- Weight:
- 22.00 LBS
- COLOR/FINISH:
- HIGHLIGHTED FINS
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- BORE SIZE IMPERIAL:
- 3-9/16'
- DISPLACEMENT:
- 85'
- PRODUCT NAME:
- BIG BORE CYLINDER KIT
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- COLOR/FINISH:
- BLACK
- FEATURES:
- FLAT TOP
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$1,479.95Qty in Cart: 0Quantity:Price:$1,479.95Subtotal:
