Steel Thunder Custom Cycles motorcycle parts

 

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Belt drives, belt drive covers, clutch kits, chain drives, drivetrain packages, kick start transmission, offset sprockets, points, derby & ignition coves, primary belts, primary chains, primary covers, pulley & brake combo kit, rear drive belts, Sportster performance parts, six speed conversion, rear sprockets, rotors, transmissions & parts.

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Battery related, battery tenders, charging systems,coils & mounts, dash/instrument panels, speedos, tachs, terminal kits, electronic ignitions, handlebar switches, headlights, horns, lighted license plate mounts, lighting, starter motors, taillights, turn signals, wiring harnesses.

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Motorcycle engine parts, drivetrain packages, cams & cam side parts, big bore kits, big bore piston kits, Sportster engine parts, motor mounts, drivetrain section, engine mounts.

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Exhaust pipes listed by model, exhaust accessories, insulating wrap, mufflers, extensions, high heat spray, heat shields, clamps and mounts.

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Frames listed by style, engine mounts, fenders, struts, floorboards, foot rests, pegs, frame covers, hardtails, highway bars, kickstands, lowering kits, seats listed by model, shocks, sissy bars & pads, swingarms.. Also, Rolling Chassis Kits.

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Complete front fork assemblies, fairings & fairing accessories, fork brackets/triple trees, fork tubes, sliders, fork legs, boots, springer front ends & parts, wide glide kits.

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Air cleaners & covers, breathers, carburetors & rebuild kits, fuel injection control, gas tanks, gas caps, gas tank cleaner/prep systems, oil, oil coolers, oil line kits, oil pressure & tank gauges, oil pumps, oil tanks, , velocity stacks.

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Saddlebags listed by manufacturer, windshields

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Tires,  tire size chart, 40, 60 & 80 spoke wheels, solid wheels.

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Tech tips, tire size chart, engine break-in, suspension & shocks info, rake and trail calculator, contact page, frequently asked questions (FAQ), our credentails, terms & conditions of sale, disclaimer, international shipping policy.

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Sportster Engine Parts  

Sportster Pages

Engine cylinder for evolution xl sportster.

ENGINE CYLINDER FOR EVO SPORTSTER - V-FACTOR

Cylinders can be used for front or rear applications.
Finish honed to standard size.
Includes cylinder stud inserts for head alignment.
Note: Not intended for high performance applications.
Natural finish.
Replaces HD# 16447-88

Part #: M60110 - Fits XL Evolution 1200cc 1988/2003,  Sold Each ... $199.10

 

 Sportster Original Equiptment style engine cylinder.  Front or rear use.  As Cast finish shown.

OE STYLE REPLACEMENT CYLINDERS FOR XL (Sportster) - V-FACTOR

Cylinders can be used for front or rear applications.
Includes cylinder stud inserts for head alignment.

Note: Not intended for high performance applications. Part #: M60110 - Natural Finish. Fits XL Evolution 1200cc 1988/2003. Replaces HD# 16447-88 ... $188.75

Motor Shop 1200cc Sportster Cylinder Kit

Black Shown


Replica 1200cc Cylinder Set for Sportster - Motorshop

Motorshop 1200cc cylinder kit includes Wiseco fitted 9:1 piston and ring sets to be used with 1200cc heads only. Kit includes 2 head and 2 base gaskets.
Can not be used as Big Bore Kit for 883 models.
Fits XL 1988/2003. Made in the USA.

Part #: V11-1200 - 9:1 Ratio, Black Finish ...$560.38 i

Part #: V11-1201 - 9:1 Ratio, Silver Finish ... $499.87

Part #: V11-1202 - 10.5:1 Ratio, Black Finish ...$499.87

Part #: V11-1203 - 10.5:1 Ratio, Silver Finish ...$499.87

Big Bore kit for Evolution Sportster.

BIG BORE KIT FOR EVOLUTION SPORTSTER 883cc, 1100cc to 1200cc

More horsepower for your 883cc or 1100cc Sportster. This kit makes it easy to give your 883cc or 1100cc a larger displacement by boring the stock cylinders and installing the pistons in our kit. 883cc requires head combustion chamber modification to reduce compression ratio to a workable level of approximately 9.5 to 1. This is achieved with a hand grinder - no expensive machining is needed. On 1100cc no head work is required. The end result is a 1200cc Sportster. In the kit is a complete set of instruction, including use of template for head work on 883cc. Fits 1986/1990. For 1991/2003 also purchase M64419 rocker cover gasket kit(below).

Part#:M60130 (Rpls. HD 16140-87 & 25628-80) ... $148.62

ROCKER ARM COVER GASKET SETS FOR SPORTSTER EVOLUTION - 1991/2003
The finest quality gasket set available from a premium gasket manufacturer in the USA. Contains molded cover gaskets. Part#:M64419 ... $35.00

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Sportster XL Performance Pistion Kits from Keith Black (KB).

PERFORMANCE PISTON KITS FOR SPORTSTER - KB (Keith Black)

Evolution is the key word as these Keith Black Performance Piston Kits were spawned from this successful manufacturer's line of automotive pistons. Machined in the USA, these lightweight permanent mold cast pistons are manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon, and are heat treated to T-6 specifications producing a stronger than stock piston. This special alloy keeps heat confined to the combustion chamber and reduces heat transfer to the piston itself. The result is a cooler running piston that can be fit to the bore tighter. Piston expansion is reduced by as much as 20% over conventional pistons. These tighter fitting pistons rock less, support the rings better, are more durable and retain compression better for maximum power. The key feature to these pistons is the accumulator groove between the top and second ring. This groove between the rings tends to average the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring. Each set of pistons include: wrist pins, spiral locks, engine assembly lube, and Hastings Moly rings. All wrist pins are .792" O.D. Sold in pairs. Machined in the U.S.A.
Model & Year Description Bore Size Part # Buy Now

Fit Ironhead Sportster 1972/1985, 

PRICE EACH KIT: $214.56

Note: It is not recommended to bore 1972/Early 1973 models more than +.030"

Dome Top Pistons, 9:1 Compression Ratio, 1000cc (61CI), STD Bore = 3.188" STD

M62402

+.010"

M62404

+.020"

M62405

+.030"

M62406

+.040"

M62407

Fit Evolution Sportster 1988/2003

PRICE EACH KIT: $193.98

Flat Top Pistons, 9:1 Compression Ratio , 1200cc (74CI),
STD Bore = 3.498"
+.010" M62274
+.020" M62275
+.030" M62276
Flat Top Pistons w/Valve Pockets cut .060" deeper for use w/shaved heads & high lift cams, 9:1 Compression Ratio, 1200cc (74CI), STD Bore = 3.498"
+.010" M62431
+.020" M62432

Fit Evolution Sportster 1986/Later

883cc to 1200cc, Overbore Conversion

PRICE EACH KIT: $196.02

Dish Top Pistons (do not require head modification), 9:1 Compression Ratio, 1200cc (74CI), STD Bore = 3.498"

STD M62290
+.005 M62291
+.010 M62292

Wisco Piston Kits for Sportsters come with top quality rings and ring locks.

Parts included in all Piston Kits

Wisco pisont for Ironhead sportster.

Ironhead Piston Style

Wisco piston for  Evo Sportster, overbore to 1200cc, reverse dome.

Evo XL 86/L Reverse Dome 9.5:1

Wiseco piston kit for Evo sportster 10:1 compression,

Evo XL 86/L Reverse Dome 10:1

Wisco piston kit for Sportster Evo 88/03, domed.

Evo XL 88/03 10.5:1

 

PISTON KITS FOR SPORTSTER - Wisco

All Wiseco pistons are forged from hi-silicon aluminum alloy for superior strength and dependability. The unique piston shape allows tight piston to wall clearances for quieter operation. This shape combined with a top quality ring package and computerized machined anti-detonation grooves offers you the most technically advanced piston kits available. Wiseco pistons are available with either Hastings X Style or Wiseco XC Style piston rings.

All piston kits listed are designed to be used with stock stroke flywheels only. Most Wiseco pistons are machined with valve pockets that are deeper and larger than stock. These pockets provide adequate valve clearance for most high lift cams, but as with any high performance upgrade all clearances must be checked.

All 883cc to 1200cc overbore and 84ci Big Bore kits do not require cylinder head modification or flywheel rebalancing unless deemed necessary by the service technician. The 84ci Big Bore kits require Big Bore cylinders and crankcases must be bored to accept the larger cylinders.
Piston Kit, made in the U.S.A. 

(+ = how much over stock)

Model & Year Size Piston Kit # Price Buy Now

Ironhead Sportster 1972/Later 1000cc

10:1 compression

3.188" standard bore

Standard M62126 $223.83
+.010" M62127 $223.83
+.020" M62128 $223.83
+.030" M62129 $223.83
+.040" M62130 $223.83
Sportster Evolution 1986/Later. 883cc & 1100cc overbore to 1200cc reverse dome, 9.5:1 compression, 3.497" standard bore Standard M62249 $269.14
+.010" M62250 $269.14
Sportster Evolution 1986/Later. 883cc & 1100cc overbore to 1200cc reverse dome, 10:1 compression, 3.497" standard bore Standard M62457 $269.14
+.010" M62458 $269.14
Evolution Sportster 1988/2003. 1200cc domed 10.5:1 compression. 3.497" standard bore Standard M62460 $227.08
+.010" M62461 $227.08

Rocker Arm Cover for Sportster Evolution 86/03.

Rocker Arm Cover for Sportster Evo 86/03

ROCKER ARM COVER ASSEMBLIES FOR SPORTSTER EVOLUTION

These chrome plated Evolution Rocker Arm Cover Assemblies are made from precision die cast aluminum. Shown below as completely assembled and disassembled. Assembly includes gaskets and 4 top cover screws. Sold as one complete assembly for one head or, to complete the job order the part number for a pair. All pairs of rocker arm cover assemblies include rocker cover bolt kit.
Part#:M60608 - Fits Sportster Evolution 1986/Later. Each. ... $198.82

Part#: M69905 - Fits Sportster Evolution 1986/Later. Pair. Includes rocker cover bolt kit... $395.46

Cylinder base / crankcase cover for sportster.

Sportster

CYLINDER BASE/CRANKCASE COVER FOR SPORTSTER - V-FACTOR

Adds a show chrome look to the left side of your engine.
Easy to install.
Includes hardware.
Compliments either black or silver engine finishes.

Part#:M60614 - Chrome Plated. Fits Sportster 2004/Later
Replaces HD# 32729-07 ... $38.15

Adjustable pushrod set for Evo XL
ADJUSTABLE PUSHROD SETS FOR EVOLUTION SPORTSTER - Crane Cams

Provides maximum strength and durability, even with extreme spring pressures.
3/8" O.D. heavy wall tubing made from seamless 4130 chrome-moly steel.
Precision machined steel ends and adjusters are heat treated & hardened for strength and wear resistance.
Adjustable length can be used with OE type cams or small base circle cams.

Part #: M61916 - Crane Cams Pushrod Set. Fits Sportster Evolution 1991/Later. 1991/2003 require our M60528 collapsible Pushrod Cover Kit sold below. Replaces HD# 17897-89 & 17904-89 ... $99.95

Collapsible pushrod cover kit for Sportster (XL)
COLLAPSIBLE PUSHROD COVER KIT FOR SPORTSTER 1991/LATER

When installing adjustable pushrods in 1991/Later Sportster models that have a one-piece non-collapsible pushrod cover, you must convert to these collapsible/telescoping covers so you can access the pushrod adjusters. This kit includes all the necessary O-rings, lower adapters and instructions. Fits Sportster 1991/Later when installing adjustable pushrods.
Part #: M60528 ... $189.15

Brass Pushrod Keeper Set for Sportster and Big Twin Harley-Davidson motorcycles. Vintage brass parts from Old-STF Cycle

Brass Pushrod Keeper Set Shown on motorcycle Engine.

BRASS PUSHROD KEEPER SET FOR BIG TWIN & SPORTSTER - OLD-STF Cycle

Brass drilled pushrod keeper set adds a cool vintage look to your bike.
Made in the USA by our friends at OLD-STF Cycle.

Part #: M60524 - Brass Pushrod Keeper Set, Fits Panhead 1948/1965 & Sportster 1957/1985
Replaces HD# 17950-48 ... $39.99

Part #: M60525 - Brass Pushrod Keeper Set, Fits Knucklehead 1940/1947, Shovelhead 1966/1984 & Big Twin Evolution 1984/1999 ... $39.99

Crane Cams Hydraulic Tappet Assembly with roller for XL (Sportster).

M61904

Hydraulic Tappet assy for Sportster : inexpensive yet good quality.

M61903

PERFORMANCE TAPPET ASSEMBLY FOR EVOLUTION MODELS - Crane Cams

These Hydraulic Tappet Assemblies with roller from Crane are the perfect replacement when wear and tear takes its toll.
These performance tappets offer premium performance, strength and reliability at a reasonable price.
Manufactured and CNC machined in the USA, these tappets are made of high strength steel alloy and heat treated for strength and wear resistance.
The internal parts are machined to micro tolerances for long lasting use. Made in the U.S.A.

Part #: M61904 - Crane Cams Hydraulic Tappet Assy w/roller. Fits Big Twin 1984/1999 & Sportster 1986/1990. Replaces HD# 18523-86 ... $67.95

Part #: M61903 - Crane Cams Hydraulic Tappet Assy w/roller.
Fits Sportster 1991/1999. Replaces HD# 18526-89 ... $35.00

Complete cam / gear cover and case bearing / bushing rebuild kit for Sportster. Made in America.

 

 

GEAR CASE BUSHING REBUILD KITS FOR SPORTSTER - American Motorcycle Hardware

Complete cam/gear cover and case bearing/bushing rebuild kits for all Sportster models. Made in the U.S.A.

Part #: M64606 - Fits Sportster 1957/1976
Contains the following:
5 Bushing Pins (Replaces HD# 275), 6 Cam Shims (Replaces HD# 6769), 4 Needle Bearings (Replaces HD# 9057), 3 Cam Bushings (Replaces HD# 25586-37), 2 Idler Gear Bushings (Replaces HD# 25597-57), 2 Cam Gear Plates (Replaces HD# 25551-58), 1 Pinion Bushing (Replaces HD# 25593-57), 1 Rear Cam Bushing (Replaces HD# 25588-57) ... $91.97

Part #: M64607- Fits Sportster 1977/1985
Contains the following:
5 Bushing Pins (Replaces HD# 275), 4 Cam Shims (Replaces HD# 6769), 4 Needle Bearings (Replaces HD# 9057), 3 Cam Bushings (Replaces HD# 25586-37), 2 Idler Gear Bushings (Replaces HD# 25597-57), 2 Cam Gear Plates (Replaces HD# 25551-58), 1 Pinion Bushing (Replaces HD# 25593-74), 1 Rear Cam Bushing (Replaces HD# 25588-57) ... $91.97

Base Gasket By-Pass Pigtail Kit for Sportster Evolution (XL Evo)
BASE GASKET BY-PASS PIGTAIL® KIT FOR BIG TWIN & SPORTSTER - American Motorcycle Hardware

If you have an Evolution with about 20,000 miles on it, you have a base gasket leak! The factory has tried to remedy this problem with at least four different styles of cylinder studs to no avail.
Eliminates top end drain back oil from even touching the base gasket.
For best results use with metal base gaskets.
Tap the cylinder in the top end oil drain back hole with the supplied aluminum tap and install the PigTail® with about one inch left protruding to be inserted into the crankcase.
Can be easily removed for cylinder service.
Designed for OE style cylinders (not intented for big bore cylinders).
Includes instructions.

Part #: M60145 Complete Kit, Fits Big Twin Evolution 1984/1999 & Sportster Evolution 1986/Later ... $72.35

Sportster cams from Andrews.  Evo and Ironhead Sportsters.

Sportster Cams

ANDREWS CAM AND GEAR SETS FOR SPORTSTER

A camshaft upgrade is the most logical step after air filter, exhaust, carburetor, and ignition system improvements have been made. It will improve mid and upper-end power. All camshafts listed are ground with stock size base circle and can be used with stock push rods. Instructions included. Made in U.S.A.

1) IRONHEAD SPORTSTER 1957/1980: Street 900/1000: Great mid-range and upper end power. Biggest cam available for no head work installation. Can use stock springs, need 9:1 or higher compression, 1982 engines may require spring spacing. Special requirements: bolt-in. Power range: 2000/7000 RPM. Cam Grind: Y. Fits Ironhead Sportster 1957/1970.

Model Year Part # Price Add to cart
1957/1970 M66882 $396.63
1971/1980 M66883 $378.43

Cam Specs for Ironhead Sportster with stock 1.43:1  rocker arm ratio.

2)EVOLUTION SPORTSTER 1986/2003 SEE CHART BELOW:

Description Special Requirements Power Range Cam Grind Model Year Part # Price Add to cart
For stock 883cc, 1100cc or 1200cc engines. More duration and lift means extra power. Stock springs and lifters can be used. Special requirements: bolt-in. Power range 2000/6000 RPM. Cam Grind V2. Fits Evolution Sportster 1986/Later bolt-in 2000/ 6000 RPM V2 1986/ 1990 M66891 $296.30
N2 1991/ 1999 M66892 $296.30
N2 2000/ 2003 M66844 $296.30
Street/Drags: stock or modified 883cc, 1100cc or 1200cc engines. Results in slightly higher idle speed. Special requirements: valve/spring clearance. Power range 2000/6000 RPM. Cam Grind V4. Fits Evolution Sportster 1991/1999. valve/spring clearance 2000/ 6000 RPM N4 1991/ 1999 M66894 discontinued   ---
N4 2000/ 2003 M66845 $296.30
Modified 1100cc, 1200cc, stroked 883cc engines with stock springs and hydraulic lifters. Special requirements: valve/spring clearance. Power range 2000/6500 RPM. Cam Grind V8. Fits Evolution Sportster 1991/1999. valve/spring clearance 2000/ 6500 RPM N8 1991/ 1999 M66896 $296.30
N8 2000/ 2003 M66846 $296.30

Cam Specs for Evo Sportsters with stock 1.625:1 rocker arm ratio.

Connecting Rod Assy with parts, fits Sportster, K model and 45 CI

 

 

Piston Pin Bushing for Sportster,  K model and 45 ci.

M65839

CONNECTING RODS AND PARTS FOR K MODEL, SPORTSTER & 45CI - V-FACTOR

Connecting rod assemblies include rods, crank pin, crank pin nuts, piston pin bushings and rod rollers with aluminum retainers
Everything fitted with standard size rollers ready to install

Part #: M65001 Connecting Rod Assembly. Fits Sportster 1957/Early 1981. Replaces HD# 24275-57A ... $223.08

Part #: M65002 Connecting Rod Assembly
Fits Sportster Late 1981/1985. Replaces HD# 24275-80 ... $223.08

Part #: M65003 Connecting Rod Assembly. Fits Sportster 1986/1999. Replaces HD# 24275-86 ... $223.08

RELATED PART:

Part #: M65839 - Rowe Replacement Piston Pin Bushing. Standard O.D. .895". Fits K Model, Sportster, & 45ci, all years (sold in pairs). Replaces HD# 24331-36 ... $24.95 (Please Note: Our minimum order is $35.00 total. Order with connecting rods, or take advantage of our low Flat Rate Shipping and order anything you might need now!)

RELATED SPORTSTER ENGINE PARTS:

Please Note: Our minimum order is $35.00 total. Take advantage of our low Flat Rate Shipping and order everything you need now!

Gear Cover Screw Kit by Colony, for XL and K models.

M66008

Sportster Tach Drive Block-off plug by Colony, made in America.

M66006

GEAR COVER SCREW KITS FOR K MODEL & SPORTSTER - Colony

Add some real class to your K Model and Sportster gear cover with these chrome plated screw kits. Available in several different styles for all models. All the screws necessary to attach the gear cover.
Allen Head Kit for 1971/1985. Made in the U.S.A.
Part #: M66008 ... $12.35

TACH DRIVE BLOCK OFF PLUG FOR SPORTSTER - Colony

Chrome plated tachometer drive block off plug with nylon gasket. Fits Sportster 1957/1984. Made in the U.S.A.
art #: M66006 ... $14.20

Don't see what you need?  Contact us.  Chances are we have it.  We have thousands of parts that are not shown online.

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Please note that all prices are subject to change.

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Columbia, NH 03576

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