Powerflex PFF5-1901 BMW 1 Series F20 F21 Front Lower Arm Rear Bush Poly Kit - Tension/Thrust/Radius Arm to Chassis, Track Control/Control Arm, Wishbone Lollipop Caster Bushings - Road Series Pair

Powerflex PFF5-1901 Poly Bush Kit - BMW 1 Series F20 F21 Front Tension Strut to Body Mounts

Transform the front-end feel of your BMW 1 Series F20 or F21 with Powerflex PFF5-1901. This uprated polyurethane bushing kit replaces the factory arm-to-body mounts on the front tension strut/thrust arm, tightening up steering response, improving braking stability and helping to reduce uneven tyre wear. A direct-fit upgrade that keeps your geometry consistent under load, ideal for daily driving and fast-road use.

Engineered in Powerflex’s Road Series compound, these bushes are approximately 60 percent stiffer than the original rubber, dramatically cutting unwanted deflection without the hassle of frequent replacements. Expect sharper turn-in, a more planted front axle and confidence-inspiring stability when pressing on.

Why enthusiasts choose PFF5-1901

• Noticeably crisper steering feel and better feedback through the wheel
• Improved braking stability and reduced fore-aft movement of the front arm
• More consistent alignment under acceleration, braking and cornering
• Helps minimise irregular tyre wear for better mileage and grip
• Durable polyurethane resists oil, weathering and ageing better than OEM rubber
• Straight swap for the original bushes - no permanent modification required

Fitment and key info

• Part number: PFF5-1901
• Chassis: BMW 1 Series F20, F21
• Location: Front lower arm rear bush - tension strut to chassis
• Series: Road Series polyurethane
• Diagram reference: 1
• Quantity in pack: 2 bushes - sold as a pair
• Replaces OE numbers: 31126855743, 31126855741, 31126855742

Note: Prefer extra caster for enhanced self-centring and stability under braking? Choose PFF5-1901G with caster offset.

What our team and customers say

We’ve installed PFF5-1901 on multiple F20 and F21 cars and feedback has been consistently excellent. Owners report a tighter front end, cleaner turn-in and a more predictable balance on B-roads and fast A-road runs.

Professional installation

Want it fitted by specialists? Book your installation with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote. A full four-wheel alignment is recommended after any suspension work.

Common search terms

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