MUGEN MS-C Full Bucket Seats (with Seat Rails) for Honda Civic Type R FL5 (2023+)

4 min read • Interior / FL5 Civic Type R

If you track your FL5—or you simply want a more "connected" driving position—the seat is one of the most meaningful upgrades you can make. The MUGEN MS-C Full Bucket Seat is built for exactly that: high rigidity, low weight, and serious lateral support to keep you locked in when corner loads go up. When Honda's in-house tuning partner develops a racing seat, expectations run high. Mugen—short for Mugen Seiki, meaning "unlimited" or "without limit"—has been engineering performance parts for Honda vehicles since 1973. Their MS-C full bucket seat is a collaboration between Mugen and technical partner Recaro, adorning the highly popular RS-G with Mugen branding, designed specifically for serious drivers.

And to make the swap straightforward, you can pair it with FL5-specific seat rails (left and right), so you're not trying to piece together universal hardware or gamble on fitment.

“Mugen

What Makes the MUGEN MS-C Different?

  1. High Strength FRP Shell + Track-Ready Structure

    MUGEN specs the MS-C with an FRP shell and a ~6.5 kg seat body weight (seat-only), focusing on rigidity and weight reduction for circuit driving.

  2. Real Support Where You Need It

    The MS-C is shaped around performance driving—deep side support and a form designed to resist lateral movement under cornering forces, while still aiming to preserve comfort with optimized urethane thickness.

  3. Breathability for Long Sessions

    MUGEN highlights mesh fabric to reduce heat buildup and "stuffiness," which matters on hot days, longer stints, or anyone daily driving a fixed-back seat.

  4. Harness-Ready Layout

    The MS-C includes belt holes for 3-inch harnesses, making it a strong option for track users running proper safety gear (when used with appropriate harnesses/anchors and safety equipment).

  5. Premium Material Finish

    MUGEN uses mesh (Recaro Kamui) fabric seat cover plus details like embroidered branding and comfort-oriented design touches (including a divided seat cushion).

Fitment: Honda Civic Type R FL5 (2023+)

For the FL5 platform, MUGEN offers MS-C packages with dedicated Recaro seat rails.

Mugen MS-C in Civic Type R FL5

Installation Notes (What to Expect)

Installing a fixed-back bucket seat is more involved than swapping a steering wheel or shifter. Plan ahead:

If you're building a dual-purpose FL5 (street + track), many drivers choose:

  • Driver side only: For maximum feel and control
  • Both seats: For a matching interior and equal support (especially if you carry a frequent passenger to events)
Mugen MS-C logo closeup

Who Is This Seat Best For?

Perfect for:

  • Track-day FL5 owners chasing improved stability and consistency
  • Drivers who want a more "race car" seating position and feedback
  • Anyone looking to reduce driver fatigue by staying properly braced in corners

Consider carefully if:

  • You prioritize easy in/out and plush daily comfort above all
  • You're not ready to deal with potential SRS implications and install complexity
Mugen MS-C FIA compliance sticker

Quick FAQ

Is the MUGEN MS-C FIA approved?

Yes, the MS-C is FIA approved / safety-compliant. Always confirm the exact labeling/documentation on the seat you receive and your sanctioning body's current rules.

Do I need rails?

Yes—FL5 installation requires appropriate rails/mounting hardware. The package we offer includes rails and side mounts.

Ready to Upgrade Your FL5 Seating?

The MUGEN MS-C Full Bucket Seat + FL5 Seat Rails combo is one of the cleanest "OEM+ race" interior upgrades you can do: premium materials, serious support, and hardware designed around your chassis.

Shop Mugen MS-C for FL5
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