Injen BMW N55 Short Ram Performance Air Intake Kit – SP1128P – Fits M135i F20/F21, M235i F22, M2 N55 F87, 335i F30/F31/F34, 435i F32/F33/F36 – Polished, Dry Filter, Heat Shield, +13hp/+11lb-ft
Injen BMW N55 Short Ram Performance Air Intake Kit – SP1128P – Fits M135i F20/F21, M235i F22, M2 N55 F87, 335i F30/F31/F34, 435i F32/F33/F36 – Polished, Dry Filter, Heat Shield, +13hp/+11lb-ft
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Injen BMW N55 Short Ram Performance Air Intake Kit – SP1128P – Fits M135i F20/F21, M235i F22, M2 N55 F87, 335i F30/F31/F34, 435i F32/F33/F36 – Polished, Dry Filter, Heat Shield, +13hp/+11lb-ft

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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.

Injen BMW N55 Short Ram Performance Intake - M135i, M2, M235i, 335i, 435i - Part No. SP1128P

Unlock instant power and response from your BMW N55 engine with the Injen SP Series Short Ram Intake, part number SP1128P. This performance intake is engineered specifically for the N55 turbo engine found in the F20 F21 M135i, F22 M235i, F87 M2, F30 F31 F34 335i and F32 F33 F36 435i. Expect dyno-proven gains of up to +13 hp and +11 lb-ft, crisper throttle response and a sharper, more engaging drive. The kit replaces the restrictive factory airbox and intake tube with a high-flow, mandrel-bent aluminium system and a large dry EA Nanofiber cone filter for maximum airflow and performance.

Injen’s patented MR Technology keeps the air-fuel ratio within safe factory limits so no tune is required. The included air box acts as a heat shield to help feed your turbo with cooler, denser air for consistent performance. We have used and installed this intake on customer N55 cars and the feedback has been excellent for performance, fitment and sound.

Why choose the Injen SP1128P for your BMW N55

  • BMW N55 performance intake and induction upgrade for M135i, M2, M235i, 335i and 435i
  • Short ram air intake design with included air box heat shield for cooler intake temps
  • Dyno-proven gains: up to +13 hp and +11 lb-ft
  • Improved throttle response, acceleration and potential fuel economy when driven normally
  • Patented MR Technology maintains a safe air-fuel ratio - no tune required
  • High-flow EA Nanofiber dry filter (X-1021) for maximum airflow and easy maintenance
  • Mandrel-bent 6061-T6 aluminium intake tube for smooth, unrestricted airflow
  • Quality silicone couplers and stainless steel clamps for durable, leak-free connections
  • Precision CNC brackets and adapters for an exact fit under the bonnet
  • Direct replacement for the factory airbox and intake tract - easy DIY install
  • Proudly manufactured in the USA

What’s included

  • Injen SP Series Short Ram Intake - Polished finish
  • EA Nanofiber Dry Air Filter - X-1021
  • Air box heat shield
  • All brackets, silicone couplers, clamps and hardware
  • Installation instructions

Performance gains

Up to +13 horsepower and +11 lb-ft of torque on the N55 engine. Results may vary by vehicle and conditions, but every kit is designed to optimise airflow and keep AFRs within factory-safe limits.

Vehicle compatibility - BMW N55

  • BMW M135i - 2012+ F20 F21 M135i and M135i xDrive
  • BMW M235i - 2014+ F22 M235i
  • BMW M2 - 2016+ F87 M2 (N55)
  • BMW 3 Series - 2012+ F30 335i and 335i xDrive Saloon, 2012+ F31 335i and 335i xDrive Touring, 2013+ F34 335i and 335i xDrive Gran Turismo
  • BMW 4 Series - 2014+ F32 435i and 435i xDrive Coupe, 2014+ F33 435i and 435i xDrive Convertible, 2014+ F36 435i and 435i xDrive Gran Coupe

Fitment and installation

This short ram intake installs under the bonnet with standard tools. For professional fitting, Nforcd offers installation at our Warwickshire workshop. Request a fitting quote at Sales@nforcd.com.

Compatibility check

To ensure perfect fitment for your BMW, we run a compatibility check prior to dispatch. Provide your UK registration number or the last 7 digits of your VIN at checkout and our team will confirm suitability for your vehicle.

Part number and manufacturer

  • Part number: SP1128P
  • Manufacturer: Injen

Warranty

Two-year Injen warranty.

Availability notice

The polished finish is on back-order only. We aim to deliver your order within 5 to 10 working days.

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Injen BMW N55 Short Ram Performance Intake SP1128P for M135i M2 M235i 335i 435i