Collection:
Chain Drive Primary
231 productsShop the range of aftermarket motorcycle clutch & primary drive products at Pro Class Custom Parts.
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Brakes
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Brake Upgrades - Front
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Brake Upgrades - Rear
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Cables & Hyd. Lines - Black
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Cables & Hyd. Lines - Chromite
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Exhaust System 2:1
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Exhaust System 2:2
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Inlet Manifolds & Clamps etc
Gasket Kits & Gaskets & Seals
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Gaskets Complete Engine Kits
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Gaskets Primary
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Gaskets Top End & Rocker
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Gaskets Transmission
Handlebars & Controls
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Hand Control Kits
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- Handlebars & Risers Indian
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Mirrors
Instruments & Gauges
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Gauges - Bagger & Dresser
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Oil+Volt+Temp & Other Gauges
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Speedo 3-3/8" Tank & Bar MT
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Speedo 4.5" Tank Mt 1936-03
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Speedo 4.5" Tank Mt 2004up
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Speedo Dash's & Bases & Other
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Speedo Drives+Sensors+Cables
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Dual Seats
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Pillion Pads
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Sissy Bar Side Straps
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Solo Seats
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- Touring (FLH) 1991-2007 Solo Seats
- Touring (FLH) 2008-2023 Solo Seats
- Touring (FLH) 2024up Solo Seats
- Vintage(1936-84) Solo Seats
Suspension
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FXR
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Front Susp. Related
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Front Suspension: 35 & 39mm
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Front Suspension: 41mm
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Front Suspension: 49mm
- Rear Shocks Related - Universal
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Rear Shocks: Dyna
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Rear Shocks: FLH
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Rear Shocks: HD Street
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Rear Shocks: HD Trike
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Rear Shocks: Indian & Victory
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Rear Shocks: Metric
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Rear Shocks: Softail
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Rear Shocks: V-Rod
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Rear Shocks: Vintage
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Rear Shocks: XL'04up
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Universal Suspension
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XL'79-03
Tires & Wheels
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Arlen Ness Wheels
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Axles & Related Components
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OEM Wheels & repl Components
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Performance Machine Wheels
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Renegade Wheels
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Spoke Wheels
Tools & Supplies
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General Workshop Equipment
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Harley-Davidson Specific Tools
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Indian & Victory Tools
Transmission & Final Drive
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Final Drive
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Transmission - BT 4 spd era
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Transmission - BT 5 spd era
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Transmission - BT 6 spd era
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Transmission - XL 4 spd era
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Transmission - XL 5 spd era
Windshields & Luggage
Sold Out
Billet Heavy-Duty Compensator Ramp. Softail 2012-2017, Dyna 2012-2017 & Touring 2011-2016 - Evolution Industries
Regular price
$1,097.99
Sale price
$1,097.99
Regular price
Unit price
/per
Features & Benefits:-
* Specialized heat treated and carburized heavy duty aircraft gear material
* Machined on a 4-axis mill ensures precision quality
* Proprietary heat treating process
* Bl...
Sold Out
Inner Primary Cover - Wrinkle Black. Fits Softail 1989-2006 - V-Factor
Regular price
$729.99
Sale price
$729.99
Regular price
Unit price
/per
* These die cast aluminum Inner Primary Covers have been CNC machined for the most accurate fit possible.
* They are also reinforced in all the critical stress areas.
* Includes bushings for early...
Clutch Basket. Fits Big Twin 1990-1993 - Rollies Speed Shop
Regular price
$752.99
Sale price
$752.99
Regular price
Unit price
/per
* 66 Teeth on Ring Gear (Re-use’s Stock 9 Tooth Pinion Gear or purchase Starter Jackshaft Kit # SPY-465046)
* 37 Teeth on Clutch Sprocket
* Replaces OEM # 37707-90
Tech Tips:-
* Advanced timing ca...
Outer Primary Cover - Satin Black. Fits Sportster 2006-2021 - V-Factor
Regular price
$703.99
Sale price
$703.99
Regular price
Unit price
/per
Features & Benefits:-
* Black Finish
* Covers are of die-cast construction, reinforced at critical areas.
* Recommeded purchase of Primary Cover Gasket # CG-C9125 & Derby Cover # DS-1107-0...
82 Link Primary Chain. Fits Softail 1984-2006, Dyna 1991-2005 & 4Spd Big Twin 1936-1986 - Evolution Industries
Regular price
$290.99
Sale price
$290.99
Regular price
Unit price
/per
* Replaces OEM # 40007-36
Suggested Additional Purchase:-
Primary Oil # SPE-R.HDPCO
Primary Cover Gasket Kit
1. 4Spd Big Twin 1965-1986 & Softail 1984-1988 Use # JGI-60538-85-K & # BAI-15-...
76 link Primary Chain. Fits 5Spd FXR & FLT 1979-1994 & Touring 1983-2006 - Evolution Industries
Regular price
$269.99
Sale price
$269.99
Regular price
Unit price
/per
* Replaces OEM # 40037-79A
Suggested Additional Purchase:-
Primary Oil # SPE-R.HDPCO
Primary Cover Gasket Kit
1. FXR & Touring 1980-1993 Use # JGI-34901-85-K & # BAI-15-0905
2. FXR & T...
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