GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold
GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold

GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit - Rectangular Port LS Manifold

$4,285.00
/
Throttle Drive
Trumpet Size
  • World Wide Shipping available.
  • Assembled & Customised to order.

Independent Throttle Body Intake Manifold Kit for all Gen 4 LS Engines with Rectangular Port Heads.

Fits LS3, LS9, L76, L77, L98, LY6 etc.

Also known as Velocity Stacks, Downdraft, ITB or Trumpets.


Performance


  • MOST POWERFUL N/A INTAKE ON THE MARKET. 
    • Has been compared to the best of Holley & FAST on back-to-back dyno's.
  • ULTRA SMOOTH IDLE FOR LARGE DURATION CAMS.
    • No cross turbulence within the manifold due to cam overlap means that each cylinder gets consistent flow and eliminates stalling.
  • SMOOTH LOW-RPM DRIVABILITY
    • Easily adjust each cylinder to be of exactly equal flow in under 5 minutes. Something only ITBs allow.
  • IMPROVED LOW & MID-RANGE TORQUE
    • Dyno tested on dozens of vehicles.
  • AMAZING INDUCTION SOUND
    • Hear the roar of every cylinder, even with filters.

Comes with Low and High mount injector port options. High mount ports are particularly effective for use of E85 or nitrous.  

Contents

  • Complete Bolt-On ITB Kit.
    • 8x Manifold Runners & Trumpets.
    • 8x Pre-Assembled Throttle Bodies.
    • Linkage Mechanism & Adjuster Screws
    • Vacuum Block, Hose Fittings and Silicone Hose.
  • 2x Aluminium Injector Rails for High-Mount Ports

Throttle Control:

  • Option 1: Cable Throttle. - For use with Standard LS1 Cable Throttle. 
    • Kit will come partially assembled.
  • Option 2: DBW Throttle - Includes Supply & Setup with 6-Pin GM Throttle Body. 
    • Kit will come fully assembled. 

    • Uses a genuine GM throttle body with square 6-pin connector for use with LS.

      Flat 8-Pin connectors off some LS1 models will require an adapter harness. 

      It is highly recommended to run a standalone ECU when installing a drive-by-wire fitted kit. Sometimes adapting the throttle body settings via the OEM ECU can be difficult. Recommended options include Holley Terminator X Max, ECUMaster and any ECU with Alpha-N capability. 

Plenum:

  • Optional: Carbon Plenum & Backing Plate (Trumpets include flanges for backing plate). View our other listing here.

Filtration:

  • Please contact us for other filtration option recommendations. 

Installation


Complete bolt-on kit. No additional parts required for operation. Uses factory fuel rails, injectors etc.

OEM Idle Control Valve and Throttle Position Sensor fits on the rear of the kit for easy installation. (Cable Throttle Only).

Tuning is required via Alpha-N. Can be tuned on the OEM ECU or with a standalone ECU.

Requires the use of a Air Flow Balancer to balance the throttles upon installation. Found here. 


Specification

  • All throttle bodies and linkage parts are precision CNC machined from 6061 Billet Aluminium. 
  • Center-less ground 12L14 Steel Shafts with Sealed Ball Bearings
  • High Precisions 7-Degree Brass throttle plates
  • 54mm throttles @ 531CFM flow each. 
  • Spun Aluminium Velocity stacks with parabolic rolled edge for maximum flow with minimal turbulance. 
  • Designed by RHD Engineering. 

Direct Transfer Payment available. Contact Us.

One year Money-Back Guarantee. 

(See Warranty & Returns Page for more details)

Holden, Pontiac, Chevrolet, General Motors



All ITB Kits & ITB Packages are packed and fulfilled 2-3 weeks after ordering.

Shipping is via DHL Express and usually 3-4 Days to USA and 5-7 Days to Europe.

This product is for off-road use only.

Redux Racing is not responsible for damage to your car or engine, or resultant injuries to persons.

Use at your own risk.

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Assembled In-House

Every kit is designed and assembled in our workshop to ensure it matches our strict standards and performs perfectly.

Proven & tested

Street, drags, show and track, since 2012 our kits have clocked thousands of laps and millions of miles.

money back guarantee

If you're not 100% satisfied you can send it back for a full refund, including shipping costs, for 12 months after purchase.

CHRIS STAFFORD AT

SEMA 2025

Find out more about his epic truck on @staffords_garage

SHOP LS3 ITBS

CAM COCALIS AT

SEMA 2025

Find him on Instagram @Cam.Cocalis and his epic E30 Build.

Shop LS7 ITBs

MATT MCENTEGART AT

SEMA 2025

The fighter jet of El Caminos. Insane. @ss_montemino

Shop LS1 ITBS
BMW M42 ITB Kit
perfected for performance

Thousands of hours of research, hundreds of designs and dozens of tested vehicles, we make sure all and every kit performs to a world class standard.

smoother idle

By eliminating cylinder cross-talk, very aggressive cams can be run without low RPM stalling and with reduced lumpiness.

Instant throttle response

By giving the intake air a short and direct path into the chamber, the throttle response becomes lightning quick.

increased power

By allowing each cylinder to consume the same and maximum amount of air, your engine can be run at its optimum performance.

GM LS3 ITB KIT
Engineered with precision.

Each model kit has undergone serious testing with proven results

BMW M50 / M52 ITB Kit
Designed with Intention

Every kit bolts directly on, no fabrication and no additional brackets required.

Easily assembled with basic hand tools, be up and running in a matter of hours.

BUILD IT RIGHT WITH:

ITB INTAKE KITS
ITB PACKAGES
BILLET INTAKES

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