Product Details

BC Racing HM Series Coilovers for the 2014-2020 BMW F82 M3 & M4 combine the inverted-damper durability of the RM Series with the independent compression and rebound tuning of the ER Series — BC's pick for track-day McPherson-strut builds. Every kit is extensively tested on the F82 M3 & M4 chassis and refined until it balances ride quality with performance — the reason F82 M3 & M4 coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide.

HM Series kits use an inverted mono-tube damper on McPherson-strut chassis (upright on double-wishbone) with external reservoirs feeding separate compression and rebound adjusters. The result: the tuning depth of the ER Series inside the heavy-load chassis architecture of the RM. BC Racing takes pride in choosing spring rates and damper valving that balance comfort and performance — you never end up with the oversprung, harsh-riding kit some brands ship as their only option. Drivers who want to deviate from the factory setup can order Swift Springs, custom spring rates, and custom valving at checkout; BC will re-valve the dampers to match whatever you specify, a level of customization most brands reserve for their top-tier race kits.

BC Racing has been manufacturing adjustable coilovers since 2004 and is one of the most popular coilover brands in the automotive tuning industry for a reason: competitive pricing, deep customization, proven reliability, and a fully rebuildable damper design that lasts years instead of seasons. These F82 M3 & M4 coilovers arrive tuned for the F82 M3 & M4 chassis and ready to bolt in — no break-in period, no guessing at setup. Every kit ships with a 2-year manufacturer warranty, lifetime access to BC service parts (pistons, seals, shafts — no unit replacement required when it's time for a rebuild), and in-house tech support from both BC Racing and the Springrates team.

Features

• 30-level rebound adjustment (top of damper)
• 30-level compression adjustment (external reservoir)
• Inverted mono-tube damper on McPherson-strut vehicles; upright on double-wishbone
• Combines RM Series inverted-damper architecture with ER Series 2-way adjustability
• Ride height adjustable independent of spring preload
• Upper mount hardware varies by chassis — camber plates, pillowball, or reused OEM mounts. See the Specifications table for what's included on your kit.
• Swift Spring and custom spring rate upgrades available at checkout
• Custom damper valving paired with custom spring rates on request
• Fully rebuildable — replacement parts available from BC for the life of the shock
• 2-year manufacturer warranty against defects

Specifications

Vehicle Fitment

• 2014 BMW F82 M3 & M4 RWD
• 2015 BMW F82 M3 & M4 RWD
• 2016 BMW F82 M3 & M4 RWD
• 2017 BMW F82 M3 & M4 RWD
• 2018 BMW F82 M3 & M4 RWD
• 2019 BMW F82 M3 & M4 RWD
• 2020 BMW F82 M3 & M4 RWD