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SDP 04.5-05 LLY twin kit

  • LLY Duramax twin turbo kit Jolly Rancher Red
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105.00 LBS
Calculated at checkout

Product Description

*In Stock! (1-3 days for coating and packaging)

*Cannot ship to California addresses

SDP Duramax 04.5-05 LLY Compound kit- up to 750RWHP



Features of our kit:


  • Includes our 3" high flow Y-bridge kit
  • Completely TIG welded, makes for very smooth joints and the insides of the tubing are flush. We strive to produce the highest quality welds possible.
  • Custom higher flowing 3.5" mouthpiece that is also o-ringed to ensure there are no boost leaks where the mouthpiece mates with the factory turbo.
  • V-banded crossover pipe on the S400 outlet + stock turbo mouthpiece (no more cheesy factory worm gear clamp) and the necessary silicone boot whereas other kits don't use them and boost leaks will occur.
  • Includes valvecover vent fittings with hose and tee
  • The kit uses our S475 turbo with the larger exhaust housing so it is unnecessary to wastegate the setup, the spoolup is very quick with this turbo in the kit.
  • Radiused T6 exhaust flange with a unique mounting setup that sets our kit apart from the rest and makes installation a breeze.
  • We use the correct designed flange off of the back side of the factory exhaust housing, they are CNC machined and are desinged to tightly slip inside the outlet of the exhaust housing and seal exhaust flow at the v-band connection.
  • High quality stainless steel v-band clamps and t-bolt clamps are used at each connection.
  • The hot side piping and exhaust housing are ceramic coated and heat wrapped.
  • The cold side piping and compressor housing are powdercoated color of choice.


Powdercoat Colors- Gallery


*MAF rescaling and tuning for the larger turbo is necessary!


*Race use only

*Due to the custom nature of this product, all sales are final.

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Product Reviews

  1. Tons of added power and the turbo whistle is awesome! 5 Star Review

    Posted by on 10th Jul 2017

    Purchased SDP Twins kit for my LLY and man what a difference! Gained several MPG's towing and not towing. Had loads of power throughout the rpm range. Best part of all was the addicting turbo whistle. Everything in the kit was included and the fabrication of the kit was impressive. Customer service was great, I had loads of questions and concerns and Scott was always able to answer them all! I would absolutely purchase a SDP Twins kit for my future trucks.

  2. scott installed twins and head studs 5 Star Review

    Posted by on 5th Feb 2013

    i would like to thank scott and his guys for the quick turn around on the head gaskets and stud work. you cant beat the price and time it took, and the twin turbo kit is awsome. the gas milage was improved and the power is unbelievable. you cant go wrong. i refer scott to everyone i know. and once you have work done by him you will too.

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