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

 

Click her for Air Cleaners and Covers

Click here for Carburetors

 

Velocity Stacks, & Breathers

Click her for Air Cleaners and Covers

Click here for Carburetors

Yost Twin Cam Ram Charger for Delphi Fuel Injected Harley-Davidson.

Twin Cam Ram Charger for fuel injected motorcycles.

Pre Filters come in 4 colors.

TWIN CAM RAM CHARGER - Yost Performance Products

Designed for all Delphi fuel-injected bikes.
Adds a cool drag look while also increasing horsepower by 5+and increasing torque by 8+ ft.-lbs.
Machined from solid 6061 T-6 billet aluminum.
Tig-welded for superior strength.
Polished to a show-quality finish.
Pre-filters available separately below; comes with one black pre-filter (Please purchase extra or alternate pre-filters with Ram Charger.  Call to order seperately, shipping will be added. Please note that we have a $35 miminum order.)

RAM CHARGER:

Part #: DS1010-0130 - Application: For all 02-05 Delphi fuel-injected Twin Cams ... $431.96 including free shipping*

RAM CHARGER PRE-FILTERS:

DS1011-0534- Black ...$43.95 when purchased with Ram Charger


DS1011-0535 - Blue ...$43.95 when purchased with Ram Charger

DS1011-0536 - Red ...$43.95 when purchased with Ram Charger

DS1011-0537 - Yellow ...$43.95 when purchased with Ram Charger

Call to order pre-filter alone, shipping will be added.

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.

Wimmer 90 degree super sucker intake.

Wimmer 90 degree super sucker intake with integrated support bracket and breather system.

90° SUPER-SUCKER INTAKE - Wimmer Custom Cycles

"The Kind of Intakes"
CNC-machined with a chrome finish.
Features an integrated support bracket and breather system.
Patented washable breather filter included.
Stack system measures 4 1/2” L with a 4” diameter.
Made in the U.S.A.

Part # DS1010-0054 - For HRS Mikuni, 92-99 80” Big Twin ... $539.06 including free shipping*


Part # DS1010-0055 - For S&S E and G series, 92-99 80” Big Twin ... $539.06 including free shipping*


Part# DS1010-0203 - For S&S E and G series, S&S 111"/117"/124" motors ... $539.06 including free shipping*


Part # DS1010-0056 - For CV/Delphi EFI, 99-06 Twin Cam ... $539.06 including free shipping*

PLEASE NOTE:  This is a special order item.  While most items ship the same or next business day, these will take a few extra days to ship.  No express delivery available.  No returns except for manufacturer defect.

Eddie Trotta's Thunder Cycle designs - velocity stacks.

Eddie Trotta's 4 inch Death Stack.  Mukuni or S&S carb.

Eddie Trotta 5.5 inch Velocity Stack.

Eddie Trotta's Death Stacks

  • Chrome billet aluminum velocity stacks.
  • Incorporate crankcase breathers into the mounting brackets.
  • Stacks screw onto mounting brackets for clean installation.
Part # Length Price Including Shipping* Buy Now
Mikuni HSR 42/45/48 Carburetors, 1993-1999 80" Evolution
DS2106-1008 4" $304.96
DS2106-1006 5.5" $373.36
S&S E and G Carburetors, 1993-1999 80" Evolution
DS2106-1009 4" $304.96
DS2106-1007 5.5" $373.36

PLEASE NOTE:  These are special order items.  While most items ship the same or next business day, these will take a few extra days to ship.  No express delivery available.  No returns.

Chrome velocity stack for S&S E and G carburetors.

Chrome velocity stack for Mikuni motorcycle carbs.

Long Velocity stack for S&S carbs.

Chrome Velocity Stacks from D&M Custom Cycle

  • Feature a one-piece breather/support bracket.
  • No external breather lines are necessary.
  • Available in short or long style.
  • Include velocity stack with screen, breather support bracket and hardware.
  • For 93-05 Big Twin.
  • Prices include shipping*.
Part # Application Length Price Buy Now
DS7807-0004 For 40mm CV carb or 2001/2005 Delphi EFI (Electronic Fuel Injection) Short $306.66
DS7807-0005 For S&S E and G carburetors Short 306.66
DS7807-0006 For Mikuni 42/45/48 carburetors Short $341.76
DS7807-0007 For 40mm CV carb or 2001/2005 Delphi EFI (Electronic Fuel Injection) Long $339.06
DS7807-0008 For S&S E and G carburetors Long $339.06
DS7807-0009 For Mikuni 42/45/48 carburetors Long $366.06

NOTE:  This is a special order item.  While most items ship the same or next business day, these will take a few extra days to ship.  No express delivery available.  No returns.

Choppers, Inc. - made in the U.S.A.

Choppers Inc Velocity Stack for S&S Super Carburetor.

VELOCITY STACK FOR S&S SUPER CARBURETOR - by Choppers, Inc.

Made in the U.S.A.

Provides a drag bike look while increasing intake velocity.
CNC machined from billet aluminum.
The unique design hides the mounting screws.
The mouth of the stack has ball milled (dimpled) accents for a custom look.
Measures 4 1/2" in length with a 4" O.D. mouth.

Polished. Fits S&S Super E or G Carburetor. Part#:MU84105 ... $184.70 including free shipping*



Click here for additional image.

Velocity stacks for CV and S&S carburetors at a great price!

Velocity stack shown on motorcycle engine.

VELOCITY STACKS FOR CV AND S&S CARBURETORS - V-Factor

CNC Machined from 6061 T-6 billet aluminum and Chrome plated.
Includes mounting hardware.
Available in two different lengths to suit your needs.

PRICES INCLUDE SHIPPING*.
Note: Does not include an air filter element or a carburetor support and must be used accordingly.

Carburetor
Length
Part #
Price
Buy Now
Keihin CV (constant velocity
2 1/2"
MU84103
$77.60
4"
MU84104
$84.71
S&S Super E or G
2 1/2"
MU84101
$75.29
4"
MU84102
$84.71

Velocity Stack for XL Sportster from Eddie Trotta's Thunder Cycle Designs.

SPORTSTER

Eddie Trotta's Thunder Cycle designs XL Velocity stack for Sportsters.

XL VELOCITY STACK - Eddie Trotta's Thunder Cycle Designs.

Billet aluminum with a chrome finish.
4” open design.
Comes with mounting bracket, mounting screws and breathers; internal screen not included.

Part #: DS1010-0266 - For XL (Sportster) with 80” Evolution heads w/ S&S E and G carbs ... $349.96 including free shipping*

SCREEN: Part #DS1010-0265 - 4" Rubber Ring with Stainless Screen purchased with velocity stack, with free shipping when purchased with velocity stack(call to order alone. We have a $35 minimum order, shipping may be added.) ... $29.95

NOTE:  These are special order items.  While most items ship the same or next business day, these will take a few extra days to ship.  No express delivery available.  No returns except for manufacturer defect.

Direct Bolt-On!

Eddie Trotta's 4 inch direct bolt-on velocity stack.

5.t inch bolt-on velocity stack from Eddie Trotta.

Eddie Trotta's Thunder Cycle designs bolt on velocity stacks.

DIRECT BOLT-ON VELOCITY STACKS - Eddie Trotta's Thunder Cycle designs

  • Chrome-plated billet aluminum.
  • Bolts on from the rear.
  • Available in three sizes for S&S E and G carbs.
  • Includes one mounting screw and internal screen.


DS1010-0045 - 5.5”  for S&S E and G carbs ... $233.96 including shipping*

DS1010-0046 - 4” for S&S E and G carbs ... $203.96 including shipping*

DS1010-0264 - 4" for S&S D carbs ... $204.96 including shipping*


NOTE:  These are special order items.  While most items ship the same or next business day, these will take a few extra days to ship.  No express delivery available.  No returns except for manufacturer defect.

Joker Machine Breathers.  Your choice of styles: Bullet, Teardrop, Cylinder.

Teardrop breathers shown on Carburetor.

Series 2000 Chrome Billet Breathers from Joker Machine

  • Available in three styles: Teardrop, Bullet and Cylinder with vent slots and easily serviceable filter.
  • For use on 93-05 Big Twin models and 91-03 XL (Sportster) models that breathe through the heads.
  • Breathers are available for use with the H-D breather kit (single breather) or for use with a carburetor support bracket (dual breathers).
  • Support brackets sold separately.
  • Made in the U.S.A.
  • Prices include shipping*.
Part # Style Application Price Buy Now
DRDS-289187 Bullet For use with H-D breather kit (Each) $106.95
DRDS-289189 Bullet For 99-06 Twin Cam 88" (Pair)** $213.96
 
DRDS-289188 Bullet For 93-99 80" Big Twin,and 91-06 XL(Sportster) (Pair) $213.96
DRDS-289002 Teardrop For 99-06 Twin Cam 88" (Pair)** $231.96
DRDS-289001 Teardrop For 93-99 80" Big Twin,and 91-06 XL(Sportster) (Pair)** $222.96
 

** NOTE:  Breather bolts not included.

NOTE:  This is a special order item.  While most items ship the same or next business day, these will take a few extra days to ship.  No express delivery available.  No returns.

Crossroads Performance's Devonator Series II Crankcase Breather.  Self contained breather and carb mount, does not require carb support bracket.

Devonator Series II Crankcase Breather - Crossroads Performance

  • Self contained breather and carb mount; does not require carb support bracket.
  • 8061 T6 aircraft aluminum construction.
  • Breathing is routed through the unit and into the throat of the carburetor track; minimizes oil in the intake tract.
  • Fits Harley-Davidson and Buell models with CV carb or Delphi EFI (electronic fuel injection).
  • Chrome finish.
  • Uses factory breather bolts.
  • O-rings, gasket and mounting screws included.
  • Prices include shipping*.
Part # Application Price including shipping* Buy Now
DS1011-0529 For 91-06 XL (Sportster) models $182.66
DS1011-0530 For 92-99 Evolution $182.66
DS1011-0531 For 99-06 Twin Cam $182.66

NOTE:  This is a special order item.  While most items ship the same or next business day, these will take a few extra days to ship.  No express delivery available.  No returns.

*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.