Street Bike Suspension
Street Bike Suspension Upgrades at JJ Motorsports
Improve your street bike's handling and ride quality with advanced suspension kits from JJ Motorsports. Our range includes complete front-end kits, fork emulators, springs, and shocks engineered for better damping, reduced dive, and customizable firmness on the street or track. Compatible with Honda CBR, Suzuki GSX-R, Yamaha R1, and more, these upgrades enhance stability, comfort, and control for sportbikes, cruisers, or tourers, whether lowering for style or tuning for performance.
Shop trusted brands like Race Tech for gold valve kits and Progressive Suspension for adjustable shocks. Explore related categories such as street bike brakes for stopping power or street bike drivetrain for balanced setups.
Top Street Bike Suspension Products
- Race Tech Complete Front End Suspension Kit - 1.50 kg/mm Spring FLEK S49150 – For heavier riders seeking firm control.
- Race Tech Complete Front End Suspension Kit - 0.95 kg/mm Spring FLEK S49095 – Balanced for standard street use.
- Race Tech Complete Front End Suspension Kit - 1.30 kg/mm Spring FLEK S49130 – Enhanced damping for aggressive riding.
- Race Tech Complete Front End Suspension Kit - 1.00 kg/mm Spring FLEK S3810 – Versatile for daily commuters.
- Race Tech Complete Front End Suspension Kit - 1.10 kg/mm Spring FLEK S49110 – Optimized for track-like precision.
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
-
K&S TECHNOLOGIES Fork Seals - 31 mm x 43 mm x 12.5 mm 16-1010
K&S TECHNOLOGIES
$15.95Fork seals are critical to suspension performance—they prevent hydraulic fluid from leaking into your fork tubes while maintaining consistent damping characteristics. Worn or damaged seals compromise your bike's handling precision and can lead to costly...04070538- SKU:
- 04070538
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- THICKNESS IMPERIAL:
- 0.49'
- THICKNESS METRIC:
- 12.50 MM
- UNITS:
- PAIR
- INSIDE DIAMETER METRIC:
- 31.00 MM
- PRODUCT NAME:
- FORK SEAL
- OUTSIDE DIAMETER METRIC:
- 43.00 MM
- RIDING STYLE:
- STREET
$15.95 -
K&S TECHNOLOGIES Fork Seals - 32 mm x 44 mm x 10.5 mm 16-1011
K&S TECHNOLOGIES
$15.95Fork seals are critical wear items that directly impact suspension performance and longevity. Worn or leaking seals compromise damping characteristics, reduce suspension responsiveness, and allow contaminants into the fork internals—leading to costly...04070539- SKU:
- 04070539
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 10.50 MM
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 44.00 MM
- RIDING STYLE:
- STREET
- INSIDE DIAMETER METRIC:
- 32.00 MM
- PRODUCT NAME:
- FORK SEAL
- THICKNESS IMPERIAL:
- 0.41'
$15.95 -
K&S TECHNOLOGIES Fork Seals - 33 mm x 45 mm x 10.5/12 mm 16-1013
K&S TECHNOLOGIES
$15.95Fork seals are your first line of defense against oil leakage and contamination—when they fail, your suspension loses damping consistency and your forks deteriorate rapidly from the inside out. This K&S Technologies replacement seal restores the...04070540- SKU:
- 04070540
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- OUTSIDE DIAMETER METRIC:
- 45.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 10.50 MM/12.00 MM
- PRODUCT NAME:
- FORK SEAL
- INSIDE DIAMETER METRIC:
- 33.00 MM
- THICKNESS IMPERIAL:
- 0.41'/0.47'
$15.95 -
K&S TECHNOLOGIES Fork Seals - 33 mm x 46 mm x 11 mm 16-1015
K&S TECHNOLOGIES
$15.95Fork seals are critical to maintaining suspension performance and preventing hydraulic fluid loss that compromises dampening and handling. A worn or leaking seal forces you to choose between frequent fluid top-offs and degraded suspension...04070542- SKU:
- 04070542
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- INSIDE DIAMETER METRIC:
- 33.00 MM
- THICKNESS METRIC:
- 11.00 MM
- OUTSIDE DIAMETER METRIC:
- 46.00 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- THICKNESS IMPERIAL:
- 0.43'
$15.95 -
K&S TECHNOLOGIES Fork Seals - 34 mm x 46 mm x 10.5 mm 16-1016
K&S TECHNOLOGIES
$15.95Fork seal degradation is one of the most common causes of oil leakage and suspension performance loss in motorcycles and ATVs. A worn or damaged seal allows hydraulic fluid to escape, compromising damping characteristics and potentially leading to fork...04070543- SKU:
- 04070543
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- THICKNESS IMPERIAL:
- 0.41'
- THICKNESS METRIC:
- 10.50 MM
- RIDING STYLE:
- STREET
- INSIDE DIAMETER METRIC:
- 34.00 MM
- OUTSIDE DIAMETER METRIC:
- 46.00 MM
- PRODUCT NAME:
- FORK SEAL
- UNITS:
- PAIR
$15.95 -
K&S TECHNOLOGIES Fork Seals - 35 mm x 48 mm x 8/9.5 mm 16-1017
K&S TECHNOLOGIES
$15.95Fork seals are critical wear items that directly impact suspension performance and safety—a failing seal allows hydraulic fluid to leak, compromising damping and risking fork damage. K&S Technologies' 35mm x 48mm x 8/9.5mm seals deliver OEM-quality...04070544- SKU:
- 04070544
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- INSIDE DIAMETER METRIC:
- 35.00 MM
- THICKNESS METRIC:
- 8.00 MM/9.50 MM
- PRODUCT NAME:
- FORK SEAL
- UNITS:
- PAIR
- OUTSIDE DIAMETER METRIC:
- 48.00 MM
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.32'/0.37'
$15.95Qty in Cart: 0Quantity:Price:$15.95Subtotal: -
K&S TECHNOLOGIES Fork Seals - 35 mm x 48 mm x 10.5 mm 16-1019
K&S TECHNOLOGIES
$15.95Worn fork seals compromise your suspension's ability to maintain consistent damping and allow hydraulic fluid to escape, leading to poor handling and accelerated wear on internal components. K&S Technologies fork seals deliver OEM-quality sealing...04070545- SKU:
- 04070545
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- FORK SEAL
- INSIDE DIAMETER METRIC:
- 35.00 MM
- OUTSIDE DIAMETER METRIC:
- 48.00 MM
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 10.50 MM
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- THICKNESS IMPERIAL:
- 0.41'
$15.95 -
K&S TECHNOLOGIES Fork Seals - 35 mm x 48 mm x 11 mm 16-1020
K&S TECHNOLOGIES
$16.95Fork seals are critical maintenance components that prevent oil leakage and contamination from compromising your suspension's performance and longevity. Worn or damaged seals allow hydraulic fluid to escape and moisture to enter, leading to reduced...04070546- SKU:
- 04070546
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- THICKNESS METRIC:
- 11.00 MM
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.43'
- UNITS:
- PAIR
- INSIDE DIAMETER METRIC:
- 35.00 MM
- OUTSIDE DIAMETER METRIC:
- 48.00 MM
- RIDING STYLE:
- ATV
$16.95 -
K&S TECHNOLOGIES Fork Seals - 35 mm x 47 mm x 10.5 mm 16-1021
K&S TECHNOLOGIES
$15.95Fork seals are critical wear items that directly impact your suspension's performance and longevity. Worn or leaking seals allow hydraulic fluid to escape, compromising damping characteristics and risking fork tube damage. K&S Technologies manufactures...04070547- SKU:
- 04070547
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- FORK SEAL
- INSIDE DIAMETER METRIC:
- 35.00 MM
- RIDING STYLE:
- STREET
- OUTSIDE DIAMETER METRIC:
- 47.00 MM
- THICKNESS METRIC:
- 10.50 MM
- UNITS:
- PAIR
- RIDING STYLE:
- OFF-ROAD
- THICKNESS IMPERIAL:
- 0.41'
$15.95 -
K&S TECHNOLOGIES Fork Seals - 36 mm x 48 mm x 8/9.5 mm 16-1024
K&S TECHNOLOGIES
$16.95Fork seals are critical wear items that directly impact suspension performance and longevity. A degraded seal allows hydraulic fluid to leak onto your brakes and tires, compromising both safety and handling precision. K&S Technologies' 36mm x 48mm fork...04070549- SKU:
- 04070549
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- THICKNESS IMPERIAL:
- 0.32'/0.37'
- OUTSIDE DIAMETER METRIC:
- 48.00 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- INSIDE DIAMETER METRIC:
- 36.00 MM
- RIDING STYLE:
- OFF-ROAD
- THICKNESS METRIC:
- 8.00 MM/9.50 MM
$16.95 -
K&S TECHNOLOGIES Fork Seals - 36 mm x 48 mm x 10.5 mm 16-1025
K&S TECHNOLOGIES
$15.95Fork seals are critical to maintaining suspension integrity and preventing oil leakage that compromises damping performance and fork longevity. A degraded or worn seal allows hydraulic fluid to escape, leading to inconsistent suspension behavior,...04070550- SKU:
- 04070550
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- FORK SEAL
- INSIDE DIAMETER METRIC:
- 36.00 MM
- RIDING STYLE:
- ATV
- THICKNESS METRIC:
- 10.50 MM
- OUTSIDE DIAMETER METRIC:
- 48.00 MM
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- THICKNESS IMPERIAL:
- 0.41'
- UNITS:
- PAIR
$15.95 -
K&S TECHNOLOGIES Fork Seals - 43 mm x 55 mm x 9.5/10 mm 16-1046
K&S TECHNOLOGIES
$15.95Fork seals are critical wear items that directly impact suspension performance and safety. Worn or leaking seals compromise damping consistency, increase friction, and allow contaminants into your fork tubes—leading to accelerated internal wear and...04070572- SKU:
- 04070572
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- INSIDE DIAMETER METRIC:
- 43.00 MM
- OUTSIDE DIAMETER METRIC:
- 55.00 MM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.37'/0.39'
- THICKNESS METRIC:
- 9.50 MM/10.00 MM
- UNITS:
- PAIR
$15.95 -
K&S TECHNOLOGIES Fork Seals - 43 mm x 54 mm x 9 mm 16-1043
K&S TECHNOLOGIES
$15.95Worn fork seals compromise suspension performance, increase maintenance costs, and can lead to oil leakage that damages internal components. The K&S Technologies 43mm x 54mm x 9mm fork seals deliver reliable sealing and consistent damping characteristics...04070568- SKU:
- 04070568
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- FORK SEAL
- INSIDE DIAMETER METRIC:
- 43.00 MM
- OUTSIDE DIAMETER METRIC:
- 54.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.35'
- THICKNESS METRIC:
- 9.00 MM
$15.95 -
K&S TECHNOLOGIES Fork Seals - 49 mm x 60 mm x 10 mm 16-1052
K&S TECHNOLOGIES
$15.95Worn fork seals compromise suspension performance, increase maintenance costs, and accelerate component wear. The K&S Technologies 49mm x 60mm x 10mm fork seals restore proper damping function and eliminate costly oil leakage that degrades braking...04070579- SKU:
- 04070579
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- OUTSIDE DIAMETER METRIC:
- 60.00 MM
- RIDING STYLE:
- OFF-ROAD
- THICKNESS IMPERIAL:
- 0.39'
- INSIDE DIAMETER METRIC:
- 49.00 MM
- PRODUCT NAME:
- FORK SEAL
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 10.00 MM
- UNITS:
- PAIR
$15.95 -
K&S TECHNOLOGIES Dust Seals - 49.00 mm 16-2052
K&S TECHNOLOGIES
$19.95Dust seals are critical protection for fork tubes and shock absorbers—they prevent contamination from mud, dirt, and debris that degrades seal performance and shortens component lifespan. K&S Technologies dust seals are precision-engineered to maintain a...04070604- SKU:
- 04070604
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- INSIDE DIAMETER METRIC:
- 49.00 MM
- OUTSIDE DIAMETER METRIC:
- 60.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.39'
- TYPE:
- DUST
- PRODUCT NAME:
- SEAL
- THICKNESS METRIC:
- 10.00 MM
$19.95 -
K&S TECHNOLOGIES Dust Seals - 41.00 mm/38.00 mm 16-2038
K&S TECHNOLOGIES
$19.95Dust seals are critical to fork longevity—they keep contaminants out of your suspension internals and prevent premature wear on seals and bushings. K&S Technologies' 41.00 mm / 38.00 mm dust seals deliver reliable protection for high-performance fork...04070598- SKU:
- 04070598
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- THICKNESS IMPERIAL:
- 0.39'
- THICKNESS IMPERIAL:
- 0.32'/0.41'
- THICKNESS METRIC:
- 10.00 MM
- THICKNESS METRIC:
- 8.00 MM/10.50 MM
- THICKNESS METRIC:
- 8.00 MM/9.50 MM
- INSIDE DIAMETER METRIC:
- 41.00 MM
- OUTSIDE DIAMETER METRIC:
- 50.00 MM
- OUTSIDE DIAMETER METRIC:
- 53.00 MM
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- OFF-ROAD
- THICKNESS IMPERIAL:
- 0.32'
- THICKNESS IMPERIAL:
- 0.32'/0.37'
- INSIDE DIAMETER METRIC:
- 38.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 8.00 MM
- TYPE:
- DUST
- UNITS:
- PAIR
$19.95 -
PROGRESSIVE SUSPENSION Shock Springs - 12-Series - Black - 105-150 lb/in 03-1368B
PROGRESSIVE SUSPENSION
$97.95If your suspension feels inconsistent on the track or trail, your shocks are likely fading under sustained load—a common problem that Progressive's 12-Series shocks eliminate entirely. Gas-charged damping and six-stage automatic valving keep your bike...DS310032- SKU:
- DS310032
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 LBS
- COLOR/FINISH:
- BLACK
- DUTY:
- HEAVY DUTY
- LENGTH IMPERIAL:
- 9.37'
- PROGRESSIVE SPRING RATE IMPERIAL:
- 105.00 LB/IN - 150.00 LB/IN
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- MODEL:
- 12 SERIES
- PRODUCT NAME:
- SHOCK SPRING
- SPRING TYPE:
- SINGLE PROGRESSIVE RATE
- TYPE:
- FITS 12.50', 13.00', 13.50' AND 14.25' SHOCK
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- PROGRESSIVE SPRING RATE METRIC:
- 1.88 KG/MM - 2.68 KG/MM
$97.95Qty in Cart: 0Quantity:Price:$97.95Subtotal: -
PROGRESSIVE SUSPENSION Shocks - 412 Cruiser Series - Chrome - 14.25" - Heavy Duty 412-4226C
PROGRESSIVE SUSPENSION
$379.95If you're running your cruiser or touring bike at or near maximum load capacity, stock shocks simply won't cut it. The Progressive 412 Cruiser Series delivers the damping control and support your bike demands, with velocity-sensitive valving that...DS310045- SKU:
- DS310045
- Availability:
- Ships Same Business Day
- Weight:
- 10.85 LBS
- COLOR/FINISH:
- CHROME
- DAMPING METHOD:
- GAS CHARGED
- MODEL:
- 412 CRUISER SERIES
- MOUNTING POSITION:
- REAR
- PROGRESSIVE SPRING RATE:
- 2,50 KG/MM - 3,60 KG/MM (140 LB/IN - 200 LB/IN)
- RESERVOIR LOCATION:
- INTERNAL
- RIDING STYLE:
- STREET
- TYPE:
- COILOVER MONOTUBE
- COLOR/FINISH:
- BLACK
- EXTENDED LENGTH IMPERIAL:
- 14.25'
- PRODUCT NAME:
- SHOCK ABSORBER
- DUTY:
- HEAVY DUTY
- MATERIAL:
- STEEL
- UNITS:
- PAIR
- ADJUSTMENT STYLE:
- AUTOMATIC
- PROGRESSIVE SPRING RATE IMPERIAL:
- 140.00 LB/IN - 200.00 LB/IN
- PROGRESSIVE SPRING RATE METRIC:
- 2.50 KG/MM - 3.60 KG/MM
- SPRING TYPE:
- SINGLE PROGRESSIVE RATE
$379.95Qty in Cart: 0Quantity:Price:$379.95Subtotal: -
PROGRESSIVE SUSPENSION Shocks - 412 Cruiser Series - Chrome - 13" - Heavy Duty 412-4224C
PROGRESSIVE SUSPENSION
$379.95If you're running a cruiser or touring bike at or near its load capacity, factory shocks simply won't cut it. Progressive's 412 Cruiser Series delivers the control and comfort you need through nitrogen-charged, velocity-sensitive technology that...DS310047- SKU:
- DS310047
- Availability:
- Ships Same Business Day
- Weight:
- 8.88 LBS
- DAMPING METHOD:
- GAS CHARGED
- DUTY:
- HEAVY DUTY
- PRODUCT NAME:
- SHOCK ABSORBER
- RIDING STYLE:
- STREET
- EXTENDED LENGTH IMPERIAL:
- 13.00'
- MOUNTING POSITION:
- REAR
- PROGRESSIVE SPRING RATE IMPERIAL:
- 120.00 LB/IN - 170.00 LB/IN
- TYPE:
- COILOVER MONOTUBE
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- PROGRESSIVE SPRING RATE:
- 2,15 KG/MM - 3,00 KG/MM (120 LB/IN - 170 LB/IN)
- UNITS:
- PAIR
- ADJUSTMENT STYLE:
- AUTOMATIC
- COLOR/FINISH:
- CHROME
- MODEL:
- 412 CRUISER SERIES
- PROGRESSIVE SPRING RATE METRIC:
- 2.15 KG/MM - 3.00 KG/MM
- RESERVOIR LOCATION:
- INTERNAL
- SPRING TYPE:
- SINGLE PROGRESSIVE RATE
$379.95 -
PROGRESSIVE SUSPENSION Shocks - 412 Cruiser Series - Chrome - 13.5" - Heavy Duty 412-4223C
PROGRESSIVE SUSPENSION
$379.95If you're running your cruiser hard and carrying substantial load, stock shocks won't cut it. The Progressive 412 Cruiser Series delivers nitrogen-charged damping that automatically adapts to real-world riding conditions, keeping your bike planted...DS310048- SKU:
- DS310048
- Availability:
- Ships Same Business Day
- Weight:
- 10.50 LBS
- COLOR/FINISH:
- CHROME
- EXTENDED LENGTH IMPERIAL:
- 13.50'
- MATERIAL:
- STEEL
- MODEL:
- 412 CRUISER SERIES
- PROGRESSIVE SPRING RATE:
- 2,50 KG/MM - 3,40 KG/MM (140 LB/IN - 190 LB/IN)
- PROGRESSIVE SPRING RATE IMPERIAL:
- 140.00 LB/IN - 190.00 LB/IN
- PROGRESSIVE SPRING RATE METRIC:
- 2.50 KG/MM - 3.40 KG/MM
- RESERVOIR LOCATION:
- INTERNAL
- UNITS:
- PAIR
- ADJUSTMENT STYLE:
- AUTOMATIC
- SPRING TYPE:
- SINGLE PROGRESSIVE RATE
- COLOR/FINISH:
- BLACK
- DAMPING METHOD:
- GAS CHARGED
- DUTY:
- HEAVY DUTY
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SHOCK ABSORBER
- RIDING STYLE:
- STREET
- TYPE:
- COILOVER MONOTUBE
$379.95
