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    Mosselman

    Mosselman MSL50-65 Stage 2 Twin Turbo Upgrade Kit for BMW N54 (E82 E90 E92 E89) – Plug & Play OEM-Based Turbos for 135i, 335i/335is/335xi, Z4 35i/35is

    Mosselman MSL50-65 Stage 2 Twin Turbo Upgrade Kit for BMW N54 (E82 E90 E92 E89) – Plug & Play OEM-Based Turbos for 135i, 335i/335is/335xi, Z4 35i/35is

    £2,460.31
    £2,894.48 £2,460.31
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    Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

    Mosselman MSL50-65 Stage 2 Bi-Turbo Kit for BMW N54 - Stock-Frame, Direct-Fit Performance Upgrade

    Ready to wake up your N54 without compromising drivability or reliability? The Mosselman MSL50-65 Stage 2 kit is a premium stock-housing bi-turbo upgrade engineered in the Netherlands by Mosselman Turbo Systems and built from brand new OE BMW turbochargers. Expect razor-sharp response, a broad torque band and serious top-end pull with OEM manners. Ideal for fast road and track builds on 135i, 335i and Z4 35i platforms.

    We have fitted these on customer cars and our own demonstrators and the results speak for themselves: rapid spool, smooth delivery and dependable performance when combined with the correct supporting mods and a proper calibration. If you are searching for an N54 hybrid solution with stock-location fitment and factory-like integration, this is the go-to choice for enthusiasts who want more without hassle.

    Key reasons to choose MSL50-65 for your N54

    • Lightning-fast response with strong midrange and top-end pull
    • Built from new genuine BMW units for OE fitment and durability
    • Manufactured in-house by Mosselman Turbo Systems in the Netherlands
    • VSR balanced and assembled to strict ISO standards with Poka Yoke processes
    • Stock-frame, bolt-on installation in the factory locations
    • Works perfectly with custom ECU tuning, Mosselman iTronic and supporting hardware
    • Limited 12-month warranty

    Vehicle applications - BMW N54 engine

    • 1 Series
      • E82 Coupe 2006 to 03/2012 - 135i N54
      • E88 Convertible 2006 to 03/2012 - 135i N54
    • 3 Series
      • E90 E91 E92 E93 2006 to 2011 - 335i, 335is, 335xi
    • Z Series
      • Z4 E89 Roadster 2008 to 2016 - 35i, 35is

    What you get

    A pair of upgraded stock-location turbochargers precision-built from brand new BMW turbo units, using Mosselman-specific internals to increase airflow while maintaining factory-style fit and daily usability.

    Fitting and support

    For installation, mapping support and aftercare, choose MJ Modifications in Warwickshire. Our team can supply, fit and calibrate, as well as advise on ideal supporting hardware. Request a fitting quote via info@mjmodifications.co.uk.

    Notes

    • All Mosselman upgraded turbochargers are built from new genuine BMW turbochargers.
    • A core charge may apply and can be refunded after inspection and approval by Mosselman.

    Additional parts recommended for installation

    • 1x Genuine BMW N54 Turbos Installation Kit
    • 1x Genuine BMW E60 E82 E90 F01 ZYL. 1-3 Turbocharger Coolant Supply Pipe (Inc. 135i, 335i, 535i and 740i)
    • 1x Genuine BMW E60 E82 E90 F01 ZYL. 4-6 Turbocharger Coolant Supply Pipe (Inc. 135i, 335i, 535i and 740i)
    • 1x Genuine BMW E60 E82 E90 F01 ZYL. 1-3 Turbocharger Coolant Return Pipe (Inc. 135i, 335i, 535i and 740i)
    • 1x Genuine BMW E60 E82 E90 E91 ZYL. 4-6 Turbocharger Coolant Return Pipe (Inc. 135i, 335i, 535i and 535ix)
    • 1x Genuine BMW N20 N54 N55 Replacement Oil Filter Kit (Inc. 135i, 335i, 535i and X6 35ix)
    • 2x Castrol Edge 5W-30 M Fully Synthetic Engine Oil 4 Litre
    • 2x Genuine BMW Radiator Engine Antifreeze and Coolant 1.5 Litre
    • 3x Universal De-Ionised Water 1 Litre
    • 1x Masata BMW N54 E82 E90 E92 Silicone Inlets (1M, 135i, 335i, 535i and Z4)

    Compatibility check

    We verify fitment before dispatch. Please provide your UK registration or the last 7 digits of your VIN at checkout.

    Part numbers

    • TUN54.5065
    • TUN54.5065.RHD - 1 Series RHD

    Manufactured by

    Mosselman Turbo Systems

    Search terms to help you find this item

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