Steel Thunder Custom Cycles - aftermarket motorcycle parts for Harley-Davidson and American custom bikes.
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Steel Thunder Custom Cycles

152 York Drive

Marshfield, MO 65706

417-468-2326

Sportster & Buell Engines and Engine Parts  

Sportster Pages - - Buell Parts

9.5:1 compression BIg Bore Cylinder Kit for 883 to 1200 Sportster XL.  Prefit cylinders with pistons, piston rings, head and base gaskets.

VT11-0595

Motor Shop BIg Bore Cylinder Kit for Sportster XL , 9.5:1 compression.

VT11-0473

Piston Set for Sportster

VT11-9885

Piston set for XL

VT11-1680

piston set .005

VT11-1700

No Headwork Necessary!

 

9.5:1 883-1200 Big Bore Cylinder Kit - V-Twin Motor Shop

1200cc XL Conversion Cylinder and Piston Set includes 2 silver finished cylinders or black wrinkle with milled edge fin cylinders with fitted Wiseco or Sifton moly 9.5:1 reverse dome piston and ring set with base and head gasket included.  Order Rocker Box Gasket Set separately.

Each Kit includes:

  • 2 Pre-Fit Cylinders with pistons and matching Hastings Piston Rings
  • 2 Head Gaskets
  • 2 Base Gaskets
  • 9.5:1 Compression

These Big Bore Kits do not require any machining. Choose from chart below.  Prices include FREE SHIPPING*:

Part# Type Cylinder/Piston Kit Finish Years Price Buy Now
VT11-0473 Wiseco Silver  1986-03  $481.73
 
VT11-0355 Wiseco Black  1986-03  $481.73
 
VT11-0595 Sifton Moly Black  1986-03  $481.73
 
VT11-0551 Sifton Moly Silver  1986-03  $481.73
 
VT11-1104 Sifton Silver  1986-03  $446.20
 
VT11-1105 Sifton Black  1986-03  $446.20
 
VT11-0346 Wiseco Silver  2004-up  $481.73
 
VT11-0347 Wiseco Black  2004-up  $481.73
 
 

PISTON SETS available separately:

Part# Item Brand Price Buy Now
VT11-9885 Piston Set Only Wiseco $264.17
 
VT11-1680 Piston Set Only Sifton $143.22
 
VT11-1700 Piston Set .005 Sifton Moly $152.30
 

10 to 1 compression big bore kit for 883-1200 XL Sportster

 

No Headwork Necessary!

10:1 883-1200 Big Bore Conversion Cylinder Kit - V-Twin Motor Shop

1200cc XL Conversion Cylinder and Piston Set includes 2 silver finished cylinders or black wrinkle with milled edge fin cylinders with fitted Wiseco 10:1 piston and ring set with base and head gasket included.

Each kit includes:

  • 2 Pre-Fit Cylinders with pistons and matching Hastings Piston Rings
  • 2 Head Gaskets
  • 2 Base Gaskets
  • 10:1 Compression

These Big Bore Kits do not require any machining. Choose from chart below.  Prices include FREE SHIPPING*:

Part # Finish Fitment Price Buy Now
VT11-0565 Silver 1986-2003 $489.99
VT11-0589 Black 1986-2003 $481.73
 
VT11-0336 Silver 2004-up $481.73
 
VT11-0337 Black 2004-up $481.73
 

Colapisble pushrod cover kit for 1991-2003 Sportster XL

VT11-0944

Collapsible pushrod cover kit for 2004 and Later Sportster XL

VT11-1205

Collapsible Pushrod Cover Kits

Collapsible Pushrod cover sets allow for ease of pushrod change or adjustment.

#VT11-0944 fits 1991-2003 XL ... $151.30 including shipping*

 

#VT11-1205 fits 2004-up XL ...$93.17 including shipping*

 

GB o-ring Gasket set for Sportster Evo.

VT14-0931

Cork gasket set for Evo Sportster.

VT15-0317

Gasket Kits

Rocker Cover Gasket Kits for Evo include upper and lower gaskets in Cork or Molded O-Ring type with bolt seals and washers for both heads.

PRICES INCLUDE FREE SHIPPING WHEN PURCHASED WITH PISTON KIT.  IF YOU WISH TO PURCHASE SEPARATELY, PLEASE CALL 1-866-889-7828;  SHIPPING WILL BE ADDED.

Part # OEM Type Fitment Price Buy Now
JAMES GASKETS
VT15-0862 17030-89 O-Ring 86-90, 883-1100-1200 $49.83
 
VT15-0863 17030-91 O-Ring 91-up, 883-1200 $49.83
 
GB GASKETS
VT15-0317 17030-86R Cork 86-90, 883-1100-1200 $27.22
 
VT14-0931 17030-91 O-Ring 91-up, 883-1200 $32.67
 

Piston Kits fit 86/05 Sportsters!

Wiseco Piston Kit for Sportster Evo 1986/L, including 04 and 05 Rubbermount Sportsters.  This one has 9.5:1 compression.

Wiseco Piston Kit for Evo Sportster with 10:1 compression.  Fits newer Sportsters also.

 

WISECO PISTON KITS FOR SPORTSTER - 883 to 1200 Conversion

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. 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 do not require cylinder head modification or flywheel rebalancing. Made in U.S.A.

Part#:MU62249 - Piston Kit. Sportster Evolution 1986/Later. 883cc & 1100cc overbore to 1200cc reverse dome, 9.5:1 compression, 3.497" standard bore. Standard. ... $257.26 including shipping*

 


Part#:MU62457 - Piston Kit. Sportster Evolution 1986/Later. 883cc & 1100cc overbore to 1200cc reverse dome, 10:1 compression, 3.497" standard bore. Standard. ... $257.26 including shipping*

 

Zippers 5 speed xl pushrod cover conversion kit for Sportsters.

DS0928-0008

Zippers 5 speed xl pushrod cover conversion kit for Buell 1200 and Sportsters.

DS0928-0007

5-SPEED XL PUSHROD COVER CONVERSION KIT - Zippers Performance Products
  • Eliminates the need to remove the cylinder heads and take off the one-piece pushrod covers to get to the pushrods.
  • Permit access to the pushrods using adaptors that allow the use of earlier-style telescoping pushrod covers.
  • Provides easier pushrod adjustments for tuning or maintenance when adjustable pushrods have been installed.
  • Part #0928-0008 includes a full telescoping pushrod cover kit with retaining clips.
  • Part #0928-0007 includes twin aluminum bases and special seals for the front and rear cylinders that replace the factory pushrod tube lower retainers, a full telescoping pushrod cover kit that includes with standard or extra long clips for big engines equipped with longer cylinders.


Part #: DS0928-0008 - For 04-05 XL 883/1200 ...$109.95 including shipping*

 


Part #: DS0928-0007 - For 91-03 XL, 87-02 Buell 1200 ...$144.96 including shipping*

 

Please note: These are special order items. While most items ship the same or next business day, these items will take a few extra days to ship. No express delivery is available. No returns on Special Order items.

This item appears on page 368 of the Drag Specialties Fatbook.  We sell everything in the Fatbook (a great source for Buell items!) as well as in all the catalogs here.

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.
Fits Sportster Evolution 1986/2003. Each. Part#:MU60608 ... $191.29 including shipping*

 
Customizing kit fits 2004 and Later Sporster.

2004-up Dress Kit for Sportster

Customizing kit includes all die cast replacement parts as pictured. #VT42-0940 - Fits XL 2004/L ... $1195.69 including free shipping.*

 

*FREE SHIPPING APPLIES IN CONTINTENTAL 48 UNITED STATES ONLY. AK, HI and APO/FPO will have additional shipping fees. We ship only within the U.S.A. and to APO/FPO (military addresses; weight and size restrictions apply.). We do not accept foreign credit cards. We do not ship to Puerto Rico.

Prefer to call in your order to Steel Thunder? Call toll-free: 1-866-889-7828. 9-5 CST M-F.

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Please note that all prices are subject to change.