BMW 1 Series E82/E88 125i 135i Coilover Kit - YCW Reference Series Height Adjustable Suspension, Lowering Coilover Shocks & Springs, 7-Way Rebound, Camber/Caster Top Mounts, Swift Springs, 6K/18K - Fast Road & Track

BMW 1 Series E82 E88 125i 135i Adjustable Suspension Upgrade - YCW Reference Series

Looking to sharpen your BMW 1 Series handling, improve ride quality and dial in a proper stance for road or track days? This YCW Reference Series adjustable suspension kit is engineered for the E82 coupe and E88 convertible - 125i and 135i - delivering precise ride height control, seven-step rebound adjustment and alignment flexibility via front camber and caster adjustable top mounts. If you are searching for a BMW E82 suspension kit, E88 lowering suspension, 125i 135i adjustable shocks, performance struts and springs, or a fast-road and track-day suspension package, this is the sweet spot for value, quality and results.

We run this setup on our own builds at MJ Modifications and customer feedback has been excellent. Expect crisp turn in, a planted rear, reduced roll and squat, and dependable damping support that remains comfortable for daily use. Spring rates are tuned for the platform - 6 kg/mm front and 18 kg/mm rear - using premium Swift linear springs for consistent response.

Why this kit stands out

• Ride height adjustment for road, fast-road or circuit use without compromise
• Seven-step rebound control to fine tune comfort and grip
• Front adjustable top mounts for camber and caster to optimise tyre contact and even wear
• Premium materials throughout for durability, consistency and long-term value
• Superb mid-range upgrade that outperforms budget options

Technical specification

• Forged 6061-T6 hard anodised aluminium front upper mounts
• High-tensile carbon steel camber and caster plate with anti-slip coating
• Oversized PTFE-lined Japanese spherical upper mount bushing
• Forged 6061-T6 hard anodised aluminium upper spring perch with sealed Japanese radial bearing
• Swift 65 mm ID cold-wound Japanese HS5.TW steel linear springs
• Spring rates - front 6 kg/mm, rear 18 kg/mm
• 52 mm OD cold-drawn Japanese SAE 1020 seamless carbon steel damper body
• Black zinc plated fully threaded shock body - 250 hours salt-spray tested
• Forged SAE 4140 chromoly piston rod with ceramic piston rod guide
• Seven-step rebound adjustment
• 44 mm OD forged 7075-T6 hard anodised aluminium DBO (Double-Digressive-Blow-Off) piston
• Silkolene PRO RSF VI-460 damper oil with Viton performance O-rings
• Forged 6061-T6 hard anodised lower spring perch locking collar
• Fully threaded forged 6061-T6 hard anodised or high-tensile carbon steel lower mount
• Silicone lower mount end caps where applicable
• Weather-proof neoprene shock covers
• Serviceable and rebuildable with after-sales technical support

Real-world benefits

• Sharper steering response and stable braking
• Reduced body movement without harshness
• Consistent damping thanks to quality oil, seals and piston design
• Alignment flexibility for daily driving, fast-road, track day or stance setups

Fitment

BMW 1 Series E82 coupe and E88 convertible - 125i and 135i.

Part number

YCW-REF-E87

Manufacturer

YCW Engineering

Warranty

Lifetime warranty on all hard parts and 1 year warranty on wear parts.

Fitting and alignment

Professional installation and geometry setup available at MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Compatibility check before dispatch

We will verify fitment before shipping. Please provide your UK registration number or the last 7 digits of your VIN at checkout so we can complete a compatibility check.

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