Collection:
Cylinder Heads & Parts - Evo
20 productsShop the range of aftermarket motorcycle engine products at Pro Class Custom Parts.
Categories
Apparel
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
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Belt Drive Primary
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Electrical
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Engine
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Complete Engines
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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
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
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- 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
585in. Lift ECONO Performance Beehive Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. - Feuling
Regular price
$364.99
Sale price
$364.99
Regular price
Unit price
/per
FEULING ECONO performance BEEHIVE valve springs designed to handle up to 585 lift camshafts at an economical price. These FEULING BEEHIVE springs are made from the same premium stress relieved con...
Head Bolts with Polished 12 Point - Chrome. Fits Evo Big Twin 1985-1991, Sportster 1986-1992 & S&S Heads. - Colony Machine
Regular price
$317.99
Sale price
$317.99
Regular price
Unit price
/per
Features & Benefits:-
* Custom Look.
* Polished & Chrome Plated, 12 Point Dome Top Headbolts.
* Replaces OEM 16480-85A & OEM 16478-85A
Proudly Made in the USA by Colony Machine !
Sold Out
Head Bolt Covers. Fits S&S Head Bolts. - S&S
Regular price
$238.99
Sale price
$238.99
Regular price
Unit price
/per
Features & Benefits:-
* Fits Big Twins 1984up & Sportster 1986–2003.
* Magnetic Covers.
* Fits S&S Head Bolts Only.
* Sold as a Pack (4).
Proudly Made in the USA by S&S Cycle !
Exhaust Valve. Fits 89cc or 91cc S&S Heads. - S&S
Regular price
$214.99
Sale price
$214.99
Regular price
Unit price
/per
Features & Benefits:-
* Replacement intake valve for S&S Super Stock Heads.
* Fits Big Twin 1984up, Sportster 1986-2003 & S&S X-Wedge.
* 1.605″ x 4.428″ @ 1.509″ Gauge.
* Sold Eac...
Electric Compression Release Kit. - S&S
Regular price
$1,068.99
Sale price
$1,068.99
Regular price
Unit price
/per
Features & Benefits:-
* Fits Twin Cam with S&S Heads.
* Fits Evo 4″ & 4-1/8″ Bore Engines with S&S Heads.
* Must be used in conjunction with S&S Rocker Covers.
Proudly Made in ...
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