YCW Reference Series Coilover Suspension Kit for BMW E46 M3 | Height Adjustable Lowering Coilovers, 4K/12K Swift Springs, 7-Click Rebound Dampers, Camber/Caster Adjustable Top Mounts, Rebuildable Street & Track Shock/Strut Set - UK

YCW Reference Series for BMW M3 E46 - Road and Track Suspension Upgrade

Transform the way your M3 E46 drives with the YCW Reference Series adjustable suspension kit. Built for fast road and circuit use, this package pairs Swift linear springs in 4K front and 12K rear rates with finely tuned dampers offering 7 positions of rebound control. Expect crisp steering response, improved traction, confident braking stability and a composed ride on British B-roads as well as on track days. Fully serviceable and engineered from premium materials, it is the smart choice for enthusiasts who want true performance without sacrificing comfort.

We run this setup on our own builds at MJ Modifications and customer feedback has been outstanding. Drivers report sharper turn-in, predictable balance and impressive compliance when daily driving, with the firmness and control you need for timed sessions at the weekend.

Why this M3 E46 suspension kit stands out

• Real gains you can feel on the road and at the circuit - stable, controlled and confidence inspiring
• Ride height adjustment for precise stance and corner-weighting flexibility
• 7-step rebound tuning so you can dial in comfort for commuting or add control for track work
• Swift-made linear springs for fast response and consistent rate
• Top mounts with camber and caster adjustment for proper geometry and tyre wear optimisation
• Built to last in UK conditions with corrosion resistant finishes and quality seals
• Rebuildable design with parts support for long-term ownership

Technical highlights

• Spring rates: 4K front and 12K rear
• Forged 6061-T6 hard anodised aluminium front upper mounts
• High-tensile carbon steel camber and caster plates with anti-slip coating
• Oversized PTFE-lined Japanese spherical upper mount bushings
• Forged 6061-T6 hard anodised aluminium upper perches with sealed Japanese radial bearings
• 65 mm ID cold-wound Japanese HS5.TW steel linear springs by Swift
• 52 mm OD cold-drawn Japanese SAE 1020 seamless carbon steel damper bodies
• Black zinc plated fully threaded bodies tested to 250 hours salt-spray
• Forged SAE 4140 chromoly steel piston shafts with ceramic guides
• 7 levels of rebound adjustment
• 44 mm OD forged 7075-T6 hard anodised aluminium Double-Digressive-Blow-Off piston
• Filled with Silkolene PRO RSF VI-460 oil and sealed with Viton O-rings
• Forged 6061-T6 hard anodised lower spring perch locking collars
• Fully threaded forged 6061-T6 hard anodised or high-tensile carbon steel lower mounts
• Silicone lower mount end caps (where applicable) and weather-proof neoprene shock covers
• Fully rebuildable with excellent spares availability

Fitment

BMW M3 E46

Part number

YCW-REF-E46M

Manufactured by

YCW Engineering

Warranty

Lifetime warranty on hard parts and 1-year warranty on wear items.

Professional installation and setup

For fitting, alignment and setup, choose MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

Compatibility check before dispatch

We will confirm suitability before shipping. Please provide your UK registration number or the last 7 digits of your VIN at checkout.

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