N70 A340 HEAVY DUTY VALVE BODY, DMax A340 Heavy Duty Valve Body, KZN130 A340 Heavy Duty Valve Body, Transgo A340 A341 A343
Heavy Duty Valve Body Kit | 4 Speed RC Colorado Isuzu DMax A340 - Image 2
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Heavy Duty Valve Body Kit | 4 Speed RC Colorado Isuzu DMax A340

$299.50

This kit includes everything you need to convert the standard 4 speed A340 valve body in the RC Colorado / Isuzu D-Max to a Heavy Duty performance valve body.

N70 A340 HEAVY DUTY VALVE BODY, DMax A340 Heavy Duty Valve Body, KZN130 A340 Heavy Duty Valve Body, Transgo A340 A341 A343

Transgo A340 A341 A343 Transmission Shift Reprogram Kit

TRANSGO A340 A341 A343 Shift reprogram kit suit Chaser, Soarer, Supra, Aristo, Hilux, Isuzu Dmax, Prado etc

 

Available on back-order

Available on back-order

Brand:Transgo
  • Australia Wide Shipping via Australia Post eParcel, TNT Express and Team Global Express
  • International Shipping via DHL or EMS
  • In Store Pick Up from Rocklea, QLD

 

Guaranteed Safe Checkout

🚗 Suitable for

  • Holden Colorado RC (2008-2012), 4 Speed Auto

  • Isuzu D-Max (2008-2012), 4 Speed Auto

  • A340 4-Speed Automatic Transmission only

📦 What’s in the Kit

  • USA-made hardened steel TCC relay boost valve & bushing

  • Blue & Orange pressure regulator valve springs (with washer)

  • USA-made hardened steel 1-2 shift valve, ball, pin & rivet

  • Red, Blue & White cut back valve springs

  • Short, Medium & Long accumulator spacers

  • Full set of accumulator springs (Blue x2, Orange, White, Red, Plain)

  • (5) Drill bits

  • TransGo sticker

⚡ Performance Benefits

  • Converts the standard A340 valve body to heavy duty specification

  • Handles increased torque from engine upgrades & towing

  • Firmer, shorter shifts for better drivability and durability

  • Stronger clutch plate engagement, reduces slip and overheating

  • Restores hydraulic integrity with hardened steel replacement parts

  • Extends transmission life under higher power loads

🛠️ Fitment Details

  • Transmission does not need to be removed for installation

  • Direct fit upgrade for A340 4-speed automatic

  • Suits performance builds, towing setups, and off-road applications

🔧 Why Upgrade?

The factory A340 valve body is a weak link when power and torque are increased. Without reinforcement, soft shifts and clutch slip lead to burnt plates and shortened transmission life. This TransGo Heavy Duty Valve Body Kit recalibrates accumulators, pressure regulation and feed orifices, ensuring your transmission can handle heavy towing, performance tuning, and off-road use.

❓ FAQ

Q: Can I install this without removing the transmission?
✅ Yes, it can be installed with the transmission in the vehicle.

Q: Does this suit the later 5-speed autos?
❌ No, this kit is only for the A340 4-speed automatic transmission.

Q: What driving styles benefit from this kit?
👉 Towing, off-road, work trucks, street performance, and hot rod applications

Additional information

Weight1.0 kg
Dimensions30.0 × 20.0 × 8.0 cm

Brand

Transgo

THE YEAR THE SHIFT KIT WAS BORN

By 1969, TransGo had already established a solid reputation engineering and producing different valve body repair kits. Builders knew for certain units, buying a TransGo valve body repair kit was as essential as an overhaul kit.It was only after many years of friends and customers affectionately referring to these kits as “shift kits”, after his industry nickname, Mr. Shift, that the company decided to trademark the name SHIFT KIT® .

STILL INDUSTRY-LEADING, STILL MADE IN THE USA

TransGo’s R&D team, led by longtime engineering director, David Hardin, focuses on engineering solutions with the builder in mind by eliminating labor- intensive and expensive processes on the bench while maintaining a price point to keep shops profitable and competitive.Some of the company’s most recent patented R&D innovations include:
  • New 2-piece pressure regulator valve system
  • Tuneless Technology, where all programming is done in the valve body and pump instead of the TCM/ECM
  • Universal reaming tools, like the one made for all GEN2 FWD Ford and General Motors six speeds, so builders don’t have to constantly shell out big bucks on specific tooling and equipment

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N70 A340 HEAVY DUTY VALVE BODY, DMax A340 Heavy Duty Valve Body, KZN130 A340 Heavy Duty Valve Body, Transgo A340 A341 A343
Heavy Duty Valve Body Kit | 4 Speed RC Colorado Isuzu DMax A340

This kit includes everything you need to convert the standard 4 speed A340 valve body in the RC Colorado / Isuzu D-Max to a Heavy Duty performance valve body.

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