Collection:
Gaskets Top End & Rocker - M8
20 productsShop the range of aftermarket motorcycle gasket kits at Pro Class Custom Parts.
Categories
Brakes
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Brake Disc Rotors
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Brake Pads
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Brake Upgrades - Front
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Brake Upgrades - Rear
Cables & Hydraulic Lines
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Cables & Hyd. Lines - Black
- Cables & Hyd. Lines Indian & Victory
- Cables & Hyd. Lines V-Rod & Street
- Clutch Cables 4 spd BT Black
- Clutch Cables 5 spd BT Black
- Clutch Cables 6 spd BT Black
- Clutch Cables XL'04UP Black
- Clutch Cables XL'86-03 Black
- Ready Made Front Brake Lines Black
- Ready Made Hyd. Clutch Lines Black
- Ready Made Rear Brake Lines Black
- Universal Hyd Lines & Fittings Black
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Cables & Hyd. Lines - Chromite
Chassis & Sheet Metal
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Engine Guards & Swingarms Etc
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Engine Mounts & Jiffy Stands
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Fenders & Associated Parts
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Fuel Tanks & Related Parts
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Oil Tanks & Associated Parts
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Rear Belt & Chain Guards
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Side Covers & Frame Covers etc.
Chrome Mounting Hardware
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Bottom End Hardware
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Complete Engine Showbike Kits
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Front & Rear End Hardware
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General Workshop Hardware
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Top End & Rocker Hardware
Clutch & Primary Drive
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Belt Drive Primary
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Chain Drive Primary
Electrical
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Charging Systems & Components
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Ignition Systems & Components
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Starter Motors & Components
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Wiring Harness & Associated
Engine
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Engine Power Pack & Hot Up Kits
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Cam Chest & Cams & Oil Pumps
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Complete Engines
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Crankcase & Bottom End
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Cylinder Heads & Components
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Cylinders & Pistons
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Oil & Engine Coolers & Parts
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Pushrods+Cvrs & Lifters+Blocks
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Rocker Covers & Rockers
Exhaust - Spare Parts Only
Exhaust - Systems & Mufflers
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Exhaust Headers
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Exhaust Mufflers
- Mufflers (BMW)
- Mufflers (Breakout)
- Mufflers (Can-Am)
- Mufflers (Dyna)
- Mufflers (Honda)
- Mufflers (Indian all touring)
- Mufflers (Indian Cruiser/Chief)
- Mufflers (Indian FTR)
- Mufflers (Indian Scout)
- Mufflers (Kawasaki)
- Mufflers (Multi Model Fitment)
- Mufflers (Nightster Special)
- Mufflers (Pan America)
- Mufflers (Polaris)
- Mufflers (Royal Enfield)
- Mufflers (Softail)
- Mufflers (Sportster)
- Mufflers (Street)
- Mufflers (Street '15-20)
- Mufflers (Touring & Trike)
- Mufflers (X350)
- Mufflers (X500)
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Exhaust System 2:1
- Breakout (2:1)
- Dyna (2:1)
- Honda (2:1)
- Indian Challenger/Pursuit (2:1)
- Indian Cruiser/Chief (2:1)
- Indian Scout (2:1)
- Indian Touring/Bagger (2:1)
- Kawasaki (2:1)
- Nightster Special (2:1)
- Rocker (2:1)
- Royal Enfield (2:1)
- Softail (2:1)
- Sportster (2:1)
- Sportster S (2:1)
- Street (2:1)
- Touring & Trike (2:1)
- V-Rod (2:1)
- Yamaha (2:1)
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Exhaust System 2:2
Foot Controls
- Air Shifters & Components
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Floor Boards & Components
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Foot Controls & Extensions
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Foot Pegs & Shifter Pegs
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Footpeg Mts, Adapters & Offsets
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Spare Parts - Foot Brake
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Spare Parts - Foot Shift
Fuel & Air Systems
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Air Cleaner Kits & Components
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Carburettor Kits & Components
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Fuel - Taps & Lines & Filters
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Fuel Injection & Components
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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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Hand Grips & Throttle
- Handlebar Accessories
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Handlebars & Risers H-D
- Handlebar Risers - Black
- Handlebar Risers - Chrome
- Handlebars 1" - Black
- Handlebars 1" - Chrome
- Handlebars 1-1/2" - Black
- Handlebars 1-1/2" - Chrome
- Handlebars 1-1/4" - Black
- Handlebars 1-1/4" - Chrome
- Risers 1" Clamp - Black
- Risers 1" Clamp - Chrome
- Risers 1-1/2" Clamp - Black
- Risers 1-1/2" Clamp - Chrome
- Risers 1-1/4" Clamp - Black
- Risers 1-1/4" Clamp - Chrome
- Risers 1-1/8" Clamp - Black
- Risers 1-1/8" Clamp - Chrome
- Handlebars & Risers Indian
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Mirrors
Helmets
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Full Face Helmets
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Open Face Helmets
- Helmet Accessories
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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Speedos & Mts Custom App.
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Tachometer
Lighting
- Accessory Lighting
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Headlights & Associated
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Passing Lamps & Associated
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Tailights & Associated
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Turn Signals & Associated
Oil Filters
Seats & Sissy Bars
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Accessories for Seats & S/Bars
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Dual Seats
- Dyna Dual Seats
- FXR Dual Seats
- Indian Dual Seats
- Metric Dual Seats
- Pan America Dual Seats
- Softail Dual Seats 1984-2017
- Softail Dual Seats 2018up
- Sportster Dual Seats
- Street 500/750 Dual Seats
- Touring (FLH) 1991-2007 Dual Seats
- Touring (FLH) 2008-2023 Dual Seats
- Touring (FLH) 2024up Dual Seats
- Vintage (1936-84) Dual Seats
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Pillion Pads
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Sissy Bar Side Straps
- Sissy Bar Uprights & Pads
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Solo Seats
- Custom or Universal Solo Seats
- Dyna Solo Seats
- FXR Solo Seats
- Indian Solo Seats
- Softail Solo Seats (1984-2017)
- Softail Solo Seats 2018up
- Sportster Solo Seats
- Street 500/750 Solo Seats
- 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
Top End Gasket Kit with 0.040in. Multi-Layer Steel MLS Head Gaskets. Fits Touring 2017-2024 & Softail 2018-2024 with 120 Engine & 4.185in. Bore. - Cometic Gaskets
Regular price
$487.99
Sale price
$487.99
Regular price
Unit price
/per
Fitment:
Typically used for aftermarket 107ci -> 120ci upgrade or 114ci -> 124ci upgrade
* MLS 0.040″ thick (OEM thickness)
* Does not fit CVO Touring Models 2023up or Street Glide & Roa...
Top End Gasket Kit with 0.040in. Multi-Layer Steel MLS Head Gaskets. Fits Touring 2017-2024 & Softail 2018-2024 with 114 Engine & 4.016in. Bore. - Cometic Gaskets
Regular price
$487.99
Sale price
$487.99
Regular price
Unit price
/per
* Replaces OEM # 25700729B
* Does not fit CVO Touring Models 2023up or Street Glide & Road Glide 2024up
Top End Gasket Kit with 0.040in. Multi-Layer Steel MLS Head Gaskets. Fits Touring 2017-2024 & Softail 2018-2024 with S&S 129/132ci (4.320in.) Engine or SE131 (4.310in.) Engine. - Cometic Gaskets
Regular price
$487.99
Sale price
$487.99
Regular price
Unit price
/per
Features & Benefits:-
* Used for 131ci or 132ci upgrade – 4.310″ / 4.320″ Bore
* MLS 0.040″ thick Head Gaskets
Tech Tips:-
* Use of these head gaskets without proper clearance checks can lead ...
Top End Gasket Kit with 0.030in. Multi-Layer Steel MLS Head Gaskets. Fits Touring 2017-2024 & Softail 2018-2024 with S&S 129/132ci (4.320in.) Engine or SE131 (4.310in.) Engine. - Cometic Gaskets
Regular price
$487.99
Sale price
$487.99
Regular price
Unit price
/per
Features & Benefits:-
* Used for 131ci or 132ci upgrade – 4.310″ / 4.320″ Bore
* MLS 0.030″ thick Head Gaskets (thinner than OEM)
* Provides an additional increase in compression.
** Remember...
Top End Gasket Kit. Fits Milwaukee-Eight 2017up with 4.250in. Bore. - S&S
Regular price
$435.99
Sale price
$435.99
Regular price
Unit price
/per
Features & Benefits:-
* Includes Head, Base & Exhaust Gaskets.
* Sold as a Kit.
Proudly Made in the USA by S&S Cycle !
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