Most Speedtech parts are common between the different turbo manufacturers, however the following parts are specific to the turbo and/or vehicle specifications the kit was built for: 

* Recirculating Wastegate Pipe (Bottom Mount and Top Mount kits)
* Bottom Mount Kit RH motor mount (differs between AWD and RWD)
* Oil feed line/fittings and oil drain block (Bottom Mount and Top Mount kits)

Therefore, if you purchase a secondhand kit that was built for a BorgWarner turbo, the above parts will be different if you switch to a Precision, Garrett or VSR turbo and vice-versa. 

Example #1: If you purchase a Bottom Mount Recirculating kit that was built for a Precision and are switching to a Borgwarner, Garrett, VSR or vice-versa, the recirculating wastegate pipe fitment will NOT line up properly. Note that the flex couplers in both the wastegate and down pipes are not meant to accommodate this improper fitment.

Example #2: If you purchase a Bottom Mount kit that has a RH motormount for a RWD car, and you have an AWD car; the RH motormount will not fit.

Example #3: If you purchase a kit built for a Precision and are upgrading to a Garrett turbo, the oil feed line/fittings and oil drain block will be different. You will also be missing the coolant line/fittings. 

As with any top mount kit, clearances are tight. Clearance and fitment is verified for turbos that we sell a kit for. For any turbo not on our list; fitment is not verified. Also note that the bigger compressor housings of the BorgWarner S3XX series turbos have reduced clearance to the hood (around 3mm). With variability of motor mount isolator thickness, age, and other tolerances, fitment can be tight. 

Exhaust Donuts - Manifold to Head 
Downpipe to Exhaust Gasket - or Permatex Ultra Copper works well instead
Loctite 565 Thread Sealant (for Precision and BW oil feed NPT fittings only)
Speedtech Turbo Blanket - * available for purchase in our store *
Speedtech 4" shorty air filter - * available for purchase in our store *
Speedtech Valve Cover Blanket - * available for purchase in our store *

Boost Controller
MAC Valve & hose to/from - * we sell a MAC Valve bracket and silicone hose in our store
Oil catch can system
New Spark Plugs
Driver side charge pipe with BOV
Upgraded Intercooler

Exhaust Donuts - Manifold to Head 
Downpipe to Exhaust Gasket - or Permatex Ultra Copper works well instead
Coolant flange o-ring
Loctite 565 Thread Sealant

Bosch ADV Sensors - * available for purchase in our store when in stock *
Boost Controller
MAC Valve & hose to/from - * we sell a MAC Valve bracket and silicone hose in our store
Oil catch can system
New Spark Plugs
Driver side charge pipe with BOV
Upgraded Intercooler

Can I but a N54 kit without a turbo? Yes, we offer N54 Top Mount and Bottom Mount No Turbo kits for sale. See our store for further details. 

Please Note: if you are sourcing your own BorgWarner SXE turbo, the turbine housing will need the 3" v-band outlet, NOT the standard Marmon flange. The v-band mating face should be roughly on the same plane as the rear surface of the T4 flange. If the v-band position is located differently, you may find alignment issues with the downpipe.

Can I buy just a manifold? No, at this time we are not able to sell our manifolds separately. Due to the timeline of manifold production, all manifolds (top mount and bottom mount) are used to fulfill kits. 

Check out the Tech Info page for HP comparison charts to help in turbo selection. 

BorgWarner SX-E: oil cooled/journal bearing. With a journal bearing turbo, you will see a slightly slower spool up transition compared to the ball bearing Garrett G or GTX or Precision Gen2, but the SXE is a good reliable turbo for HP per dollar.

Garrett G-Series or GTX line - One of the best options for reliability and performance, but priced accordingly. Water cooled, ball bearing, great materials and quality. If you plan to ever road race your car, these are a great choice.

Precision - Great performing turbos, usually one of the highest HP per comp wheel size. These are oil cooled like the BW SXE, but the Precision line has options of journal or ball bearing, you'll pay more for the ball bearing (noted as "Gen 2") turbos vs journal bearing. 

VS Racing - One of the better low cost options. These have been very popular in the LS world. Note - the ones on our list are all single scroll turbine housings, compared to the rest on our list come in twin scroll, so a bit more lag compared to the twin scroll options.

We offer a military discount. To receive this discount, email us a photocopy of your military id and we will issue you a promo code.

Shops - email us for information.

Beyond that, our kits are heavily discounted already so no further discounts are currently offered.

Yes, we provide full color instructions with the purchase of our N54 kits and we are available for questions as well by emailing us at: jeff@speedtech.com or support@speedtech.com. Due to sensitive nature, we do not offer electronic copies.

Performance will be the same between the two kits as both are twin scroll short runners for quick spool. It really comes down to where you prefer the turbo; do you like the sleeper look, or up front when you open the hood? The top mount kit is often preferred for serviceability, especially if you swap turbos often.

You can see at the link below all the work we did during development of the kit, including making sure O2's have the best chance at a long life:



Yes, we designed our N54 Top & Bottom Mount kits to work with RWD and AWD. 

No, at this time fitment cannot be verified for our Bottom or Top Mount kits for the RHD platform.

We have not done any fitment on E60 chassis cars. Right now we have fitment for E8x, E9x, F2x, F3x.


There are many options to choose from for our N54 kits for which the price fluctuates.

The Speedtech N54 Top and Bottom Mount Kit pricing will vary depending on the turbo, recirculating or open dump setup, and wastegate selections. See our Store for specific pricing based on the turbo kit of your choice. You can select different options and the price will adjust. 

All purchases are made through our website. You can purchase the kit in full or purchase a down payment (price varies based on turbo selection) to get the turbo ordered, with the remainder due prior to shipping. *refer to Down Payments terms & conditions

Payment options are credit card, paypal or Affirm. We also accept bank wire transfer. For payments made via wire transfer; email support@speedtech.com for banking info and instructions.


Lead time on a kit varies based on turbo availability and can be anywhere from 3 to 12 weeks currently.

As of April 2022, all Top Mount kits are batch release with a lead time of 3-6 weeks (with or without a turbo).

Lead times on any kit may be longer or shorter depending on the turbo.

For BorgWarner or Precision Turbo Complete Kit purchases shipping to an address in the United States (not a forwarding service), the turbo will drop ship direct to the customer and arrive separately from the remainder of the kit. As a result, you will receive your turbo before or after the remainder of the kit. 

2. For Garrett and VSR Complete kit purchases, the complete kit will ship in 1 box.

If you purchase the down payment option, the entire kit will ship in 1 box. 

International complete kit purchases and purchases using a forwarding service, will ship in 1 box.  

If you need to ship outside of the United States, we can ship direct to you. However, we recommend using a forwarding service in order to save on shipping costs. Due to size, weight and value of our kits, our overseas shipping rates are very costly. (www.MYUS.com is one of the forwarding services our current customers have used.)

For International Direct shipping options, you will need to first email us the exact shipping address for a quote before you are able to check out.

* Products are not for sale or street use in California & other states following the California Emissions Standards.



DOWN PAYMENT TERMS & CONDITIONS (effective as of February 1, 2021)
Due to the varied and sometimes lengthy lead time on the turbochargers from the different manufacturers, SPEEDTECH offers a "Down Payment" option. Once we receive a Down Payment order, the customer specified turbocharger order is placed. When the turbocharger is received and the kit is ready to ship, a promo code is emailed to the customer to complete their kit purchase. Once a notification email has been sent requesting final payment with the accompanying promo code to deduct the down payment, payment needs to be made within 4 weeks. All kit orders need to be finalized in a timely manner. If final kit payment is not received within 4 weeks, the order will be canceled and the customer will be refunded their Down Payment minus 25%. 

If you have an issue with your turbocharger, all warranty issues are handled directly through the turbocharger manufacturer as SPEEDTECH does not modify the turbochargers in any way.

All hot-side parts (not including flexible couplers) come with a limited 12 month warranty and will be resolved on an individual basis by emailing us at support@speedtech.com. This guarantees SPEEDTECH parts to be free from manufacturing defects. Warranty applies to the original purchaser only.

At SPEEDTECH we stand behind the quality products that we sell. While many kit parts are interchangeable between their specific platforms, each kit is also tailored to the specific end user and includes customized components. If for some reason you want/need to return your turbo kit, the following will apply:

RETURNS: No Returns are allowed on any product after 30 days from the date you receive your purchase. To be eligible for a return, your purchase must be unused and in the same condition and original packaging as when you received it. All returns require a Return Materials Authorization (RMA) and a receipt or proof of purchase. Email support@speedtech.com for return details and to receive your RMA number. If you do not have a RMA number, your return will be marked return to sender and your return will not be processed. You will be responsible for paying for your own shipping costs for returning your Service. Shipping costs are non-refundable. We cannot guarantee that we will receive your returned item and therefore, due to the high value of all products, you are required to purchase shipping insurance for returns and you must use a trackable shipping service. If your return is not received and a claim cannot be filed due to lack of a tracking number and/or shipping insurance, you will not be issued a refund. As all products are made to order, a 25% restocking fee applies to all returns.

REFUNDS: Refunds (if applicable) Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, your refund will be processed, minus the 25% restocking fee that applies to all refunds and a credit will be issued to your original method of payment, within 10 business days.

CANCELLATION: If for any reason you wish to cancel your order before your Service has shipped, you will be issued a refund minus a 25% restocking fee. If your Service purchased was a "turbo kit" and you paid in full, you will receive a refund minus 25% off the cost of the turbocharger. If you purchased a down payment toward a turbo kit, you will be issued a refund minus 25% from the cost of the down payment. Once your Service has shipped, the order cannot be cancelled, refer to Return policy above.


The only exception is for international customers using a forwarding service. Your billing address will be your international/home address and the shipping address will be the forwarding service (i.e. MYUS).