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AST AST 15-18 BMW M3 F80/M4 F82 LCI / 12-15 BMW M3 F80 Pre LCI 5100 Comp Series Coilovers
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AST 15-18 BMW M3 F80/M4 F82 LCI / 12-15 BMW M3 F80 Pre LCI 5100 Comp Series Coilovers

AST
ASTACC-B2103S/5D
astACC-B2103S/5D
Coilovers
Out of stock
$ 5,090.00 $ 4,581.00

SKU: ACC-B2103S/5D | UPC: astACC-B2103S/5D

AST 5100 Competition Series Coilover Suspension - 2014-2020 BMW M3 (F80) / M4 (F82/F83) Including Pre-LCI & LCI Models

AST 5100 Competition Series coilovers bring race-proven monotube damper technology tuned for BMW F80 M3 sedan and F82/F83 M4 coupe/convertible models. Inverted front struts external reservoirs independent rebound compression adjustments and height-adjustable perches deliver precise handling reduced body roll and damping control for street canyon carving or track days with daily ride comfort. This complete bolt-on kit fits all variants including Competition CS and GTS with factory EDC delete compatibility.

Key Features

  • Monotube Inverted Front Struts: Larger piston diameter reduces unsprung weight for immediate response and sharper steering feedback.
  • External Reservoir All Four Corners: Boosts oil volume nitrogen stability for fade-free performance during extended hot track sessions.
  • 12-Click Rebound Adjustment: Top-mounted knobs on all dampers allow quick trackside tuning without tools.
  • 10-Click High-Speed Low-Speed Compression: Reservoir adjustments provide chassis-specific control for bumps and high-speed corners.
  • Height Adjustable: 30-60 mm drop front/rear via threaded body lower bracket maintains geometry.
  • Spring Rates: Front 500 lbs/in (9 N/mm) linear rear 800 lbs/in (14 N/mm) progressive with helpers for balanced grip.
  • Rebuildable Design: Serviceable worldwide with AST network for long-term reliability.
  • Top Mounts: Reinforced camber-adjustable fronts with monoball bearings enhance alignment precision.

Product Notes

  • Complete kit includes front struts rear shocks reservoirs springs dust boots tools hardware.
  • Part number ACC-B2103S/5D (5D for external reservoir compression adjustment) approximate kit weight 52-56 lbs.
  • Fits Pre-LCI LCI F80 M3 F82/F83 M4 all variants EDC delete required to cancel electronic damping errors.

Installation Notes

  • Bolt-on using factory mounting points professional alignment corner balancing recommended.
  • EDC cancellation modules or coding needed to eliminate dash errors.
  • Installation time 4-6 hours with lift includes all hardware.

This Part Fits

Year Make Model Submodel
2014-2018 BMW M3 Sedan F80 (Base Competition Competition Sport CS)
2014-2020 BMW M4 Coupe F82 (Base Competition CS GTS)
2014-2020 BMW M4 Convertible F83 (Base Competition)

Why Choose AST Suspension?

  • Dutch manufacturer with decades of motorsport wins in DTM WTCC club racing.
  • 5100 Series trusted by pro teams track enthusiasts worldwide.
  • 2-year unlimited mileage warranty full rebuild service available.

Frequently Asked Questions

  • Q: Does this kit delete EDC?
    A: Yes mechanical dampers replace electronic system use EDC delete modules or coding to clear dash errors.
  • Q: Can factory top mounts be retained?
    A: No kit provides upgraded camber plates with monoball bearings for better performance durability.
  • Q: What are the spring rates?
    A: Front 9 N/mm linear rear 14 N/mm progressive ideal street/track balance custom rates optional.

Shipping & Handling

  • Method: Standard ground shipping two oversized boxes
  • Availability: In stock - ships same or next business day
  • Packaging: Front box 36" x 18" x 14" Rear box 32" x 18" x 14"
  • Weight: Approximately 65-70 lbs total

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