Performance M
Maxton Design Racing Durability Rear Diffuser/Splitter Valance for BMW 1 Series F20 M135i (2011-2015) - 10mm ABS Matte Black or Red Core - Rear Bumper Lip Undertray/Lower Apron Fins
Maxton Design Racing Durability Rear Diffuser/Splitter Valance for BMW 1 Series F20 M135i (2011-2015) - 10mm ABS Matte Black or Red Core - Rear Bumper Lip Undertray/Lower Apron Fins
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.
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Track-inspired rear splitter upgrade for BMW M135i F20 2011 to 2015
Give your F20 M135i the aggressive rear-end it deserves with this Maxton Design Racing Durability series lower bumper insert. Crafted from extra-thick 10 mm ABS, this rear aero piece delivers a premium OEM-plus look, sharper lines and a motorsport aesthetic that suits the 1 Series hot hatch perfectly. If you are searching for a BMW M135i F20 rear splitter, valance, lower apron, rear undertray, or performance styling for 2011 to 2015 models, this is the go-to choice for a clean, bolt-on transformation.
Why enthusiasts choose this rear aero insert
- Durable 10 mm ABS construction for a solid, high-quality feel
- Impact and scratch resistance for daily driving and spirited use
- UV-protected surface to help resist fading and discolouration
- Weather and temperature resistant for UK roads all year round
- Delivered vacuum-sealed with protective film to keep the finish pristine
- No painting required for a crisp matte look straight out of the box
- Authenticity labelling for peace of mind
- Material with TUV MATERIALGUTACHTEN certification
Finishes
- 10 mm matte black
- 10 mm matte black with red core accent for a subtle colour pop
The sculpted fins and pronounced profile add serious presence without looking out of place. Our team has fitted this part on customer cars and we consistently hear the same feedback - superb fit, top-tier finish and a look that transforms the rear bumper. A brilliant styling mod for anyone building a BMW 1 Series F20 street or track-inspired project.
Vehicle compatibility
Fits only:
- BMW M135i F20 - 2011 to 2015
What you receive
- Maxton Design Racing Durability rear aero piece
- Dedicated mounting hardware
Installation
Designed as a direct bolt-on add-on for the OEM bumper using the supplied fixings. Professional fitting is recommended for the best alignment and finish.
Want it installed for you? Book fitting with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.
Notes
- If you choose to paint the product, a suitable primer must be applied first.
Why buy from MJ Modifications
- Performance styling specialists for BMW 1 Series upgrades
- Genuine Maxton Design product with full authenticity labelling
- Tried and fitted by us with excellent customer feedback
Searching for BMW M135i F20 rear splitter, rear valance, rear lower diffuser fins, rear bumper extension, undertray insert, BMW 1 Series F20 body kit, M135i styling parts UK, F20 tuning accessories, matte black rear lip or an aggressive rear bumper add-on for 2011, 2012, 2013, 2014 or 2015 models? This Maxton Design Racing Durability piece is the upgrade that delivers the stance and quality finish you want.
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