Mosselman BMW S55 Upgraded Stage 2 Turbochargers MSL65-80 For BMW F80 M3, F82 M4 & F87 M2 Competition

The Mosselman Upgrade Turbocharger Set (MSL65-80) for the BMW S55 engine delivers a significant increase in performance while retaining the fast, responsive spool characteristics the S55 platform is known for. By improving airflow and reducing backpressure, this turbo set has demonstrated exceptional results, achieving power figures that have pushed dyno limits while maintaining proven reliability.

Depending on supporting modifications and fuel type, the MSL65-80 turbocharger set is capable of producing up to 800hp*. It is an ideal solution for drivers seeking a substantial performance upgrade that remains well-balanced and usable across a wide range of driving conditions.

The kit is based on brand-new MHI S55 turbochargers, enhanced with multiple Mosselman-designed components to ensure outstanding quality, consistency, and durability. Thanks to their OEM origins, these turbos offer a true plug-and-play installation with no additional modifications required. Each set is supplied with a limited 1-year Mosselman warranty.

Key Features

• Performance capability of up to 800hp*

• Based on brand-new MHI S55 turbochargers

• Billet aerospace-grade aluminium compressor wheel

• Latest-generation oversized MHI turbine wheel with slim-nose design

• High-precision CNC machined housings

• VSR balanced for smooth, reliable operation

• Titanium shaft nut

• Manufactured in-house at Mosselman HQ in The Netherlands

• True plug-and-play installation

• Extremely low core charge (where applicable)

*Power figures depend on supporting modifications and fuel type.

Compatible Vehicles

• BMW F80 M3 Saloon (2014–2019)

• BMW F82 M4 Coupe (2014–2020)

• BMW F83 M4 Cabriolet (2014–2020)

• BMW F87 M2 Competition Coupe (2018–2021)

Core Charge Options – Important Information

This product is available with two purchase options. Please read the following carefully and ensure the correct option is selected at checkout to avoid delays or additional contact.

Option 1: No Core Charge

Only select this option if:

• You have already sent your original turbochargers to us in advance, or

• You are physically dropping off your turbochargers at our facility and collecting the upgraded set in person

In short, this option is only valid when we already have your original S55 turbochargers in our possession at the time of order.

If your original turbos have not already been sent or dropped off, do not select this option. Selecting it incorrectly will result in order delays while the situation is resolved.

Option 2: With Core Charge (Refundable)

Select this option if:

• You are not sending your turbochargers to us in advance, and

• You want to receive the Mosselman upgraded turbos first, then return your original units afterwards

In this case, a core charge is applied at checkout. Once your original turbochargers are returned and approved as usable cores by Mosselman, the core charge will be refunded in full.

We must receive your original turbochargers within 90 days of purchase to be eligible for the refund.

This option allows you to minimise vehicle downtime by fitting the upgraded turbos first and returning the originals later.

Core Charge Disclaimer

• Core charges are refundable only after original turbochargers are returned

• Returned units must be complete and in usable condition

• Core approval and refunds are subject to inspection by Mosselman

• Choosing the correct option at checkout is essential to avoid delays

If you are unsure which option applies to your situation, please contact us before placing your order.

Returns Policy Notice

Please note: Due to complex logistics and the bespoke nature of the product, all Mosselman turbocharger sets are non-refundable and excluded from our returns policy.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.