Performance M
Maxton Design Street Pro Rear Diffuser Splitter for BMW 1 Series F20 (2011-2015) - 10mm ABS Rear Lower Spoiler Valance Bumper Insert - Matte Black or Red Core - Performance Rear Apron Under-Bumper Trim
Maxton Design Street Pro Rear Diffuser Splitter for BMW 1 Series F20 (2011-2015) - 10mm ABS Rear Lower Spoiler Valance Bumper Insert - Matte Black or Red Core - Performance Rear Apron Under-Bumper Trim
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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Street Pro Rear Lower Spoiler by Maxton Design for BMW 1 Series F20
Give the back end of your F20 a serious upgrade with this precision-made rear lower diffuser panel from Maxton Design. Built from 10 mm ABS for a solid, premium feel and clean fitment, it delivers a track-inspired look with everyday durability. Choose stealth matte black or a matte black finish with a red-core accent for a bold, motorsport vibe.
Vehicle compatibility
BMW 1 Series F20 2011 to 2015
Why this rear aero upgrade stands out
- 10 mm ABS construction for a rigid, high-quality rear lower valance insert
- Excellent impact and scratch resistance for daily road use
- Sharp Street Pro styling to enhance the rear bumper profile
- UV-stabilised surface to help preserve colour and finish
- Weather and temperature resistant for year-round confidence
- Arrives vacuum sealed with protective film
- Ready to fit with no painting required
- If painting, apply primer first
- Authenticity labels on the part
- TUV MATERIALGUTACHTEN certified material
Finish options
- Matte black 10 mm ABS
- Matte black 10 mm ABS with red core accent
What is included
- Street Pro rear lower diffuser panel
- Mounting hardware kit
Tested by us, loved by our customers
We have installed this exact rear lower spoiler on our own builds and customer cars. Feedback is consistently positive for fitment, finish and the way it sharpens the F20’s tail. It gives that purposeful, performance look without compromising daily usability.
Professional installation
We recommend professional fitting. MJ Modifications offers installation at our workshop in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.
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BMW F20 rear splitter, BMW 1 hatch rear lower valance, F20 rear bumper insert, BMW 1 Series F20 aero kit rear, Street Pro rear lower spoiler, performance rear apron F20, BMW 1 Series back bumper trim 2011 2012 2013 2014 2015, 10mm ABS rear diffuser panel, matte black rear under-bumper spoiler, red core rear diffuser insert, F20 styling parts UK, Maxton rear lower valance F20.
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