King Motorsports Unlimited

King Motorsports Unlimited www.KingMotorsports.com
[email protected]
(262) 522-7558

We also build and ship race-spec engines and cars around the world.
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King Motorsports is a full-service chassis, engine, and race car fabrication shop. In business since 1981, we are the sole authorized North American distributor for Mugen products, the premier aftermarket line for Honda and Acura automobiles. We build the most powerful, reliable Honda/Acura race cars, drag cars and street performance cars in the U.S. Shop online or visit us in our shop/showroom in New Berlin, Wisconsin.

09/02/2026
In Stock: The Perfect Interior Detail – Mugen Seat Belt PadsElevate your cabin with the ultimate interior finishing touc...
09/01/2026

In Stock: The Perfect Interior Detail – Mugen Seat Belt Pads

Elevate your cabin with the ultimate interior finishing touch. The Mugen Seat Belt Shoulder Pad Set is back in stock and ready to ship from King Motorsports!

It is all in the details. Crafted with a premium memory foam core, these pads are designed to contour perfectly to your body, eliminating seatbelt dig whether you are attacking apexes on track or just cruising on your daily commute. Each pad proudly displays the iconic MUGEN block logo accompanied by the signature tricolor bar, instantly injecting authentic motorsport heritage into your cockpit.

The Details
• Premium Comfort: Memory foam construction provides a tailored, ergonomic fit that won’t lose its shape.
• Signature Style: Features the classic Mugen corporate logo and tricolor emblem.
• What’s Included: Sold as a complete set of two (2) shoulder pads.
• The Deal: $50 with FREE SHIPPING anywhere in the Continental US! 📦

Confirmed Vehicle Fitment
Designed as a universal fit for virtually every golden-era and modern Honda/Acura chassis, including:
• Civic / Civic Type R: 1988–2005, 8th Gen (Si/CTR), 10th Gen (FK8), 11th Gen (FL5)
• Integra / Type S: 1986–2001, 2023+ Integra, 2024+ DE5
• The Icons: NSX (1990–2005), S2000 (AP1/AP2), CRX, Prelude, Del Sol, CR-Z
• Street & Daily: RSX, TSX, Fit

Your Authorized US Mugen Distributor Since 1988.

What’s Your Guess? Ayrton Senna’s Personal Honda NSX Heads to Auction! 🏁Few cars share a bond with a driver quite like t...
09/01/2026

What’s Your Guess? Ayrton Senna’s Personal Honda NSX Heads to Auction! 🏁

Few cars share a bond with a driver quite like the Honda NSX and three-time Formula 1 World Champion, Ayrton Senna. Now, one of the most famous cars in motorsport history—Senna’s personal 1991 Honda NSX—is crossing the auction block, and we want to know what you think it will sell for!

The Legend & The Development
Senna wasn’t just a promotional figurehead for the NSX; he was deeply involved in its DNA. While testing early prototypes, his critical feedback on chassis rigidity led Honda engineers to stiffen the structure by 50% and completely revise the suspension geometry. We all know the legendary footage of him heel-toeing around Suzuka in loafers—he helped forge the NSX into a true Ferrari-fighter.

Chassis T000233: A Documented History
This specific red over black roof NSX was provided by Honda for Senna’s personal use at his home in Quinta do Lago, Portugal.

Iconic Moments: This is the exact car Senna was famously photographed washing in his driveway with a garden hose. He also drove it to the Portuguese Grand Prix at Estoril and launched it for the cameras in the documentary “Ayrton Senna: Racing Is In My Blood.”

The Journey: After passing through several owners in Portugal, the UK, and Japan, it made a special return to Imola in 2019, where former Minardi team principal Giancarlo Minardi drove it to commemorate the 25th anniversary of Senna’s passing.

The Auction Estimate
Given its extraordinary, fully documented provenance and direct connection to one of the greatest F1 drivers to ever live, RM Sotheby’s has placed an estimate of £500,000 to £800,000 ($682,000 to $1.1 Million).

What Do You Think?
Is the $1.1 Million estimate too low for a piece of automotive and F1 history this significant?

Drop your final sale price predictions in the comments below! 👇

09/01/2026
09/01/2026
09/01/2026

Which Mugen wing do you prefer? 無限MUGEN King Motorsports Unlimited

In Stock: Mugen Carbon-Look Rear Bumper Step DecalProtect your paint and add a subtle motorsport touch to your rear fasc...
08/31/2026

In Stock: Mugen Carbon-Look Rear Bumper Step Decal

Protect your paint and add a subtle motorsport touch to your rear fascia! Whether you’re loading up track day gear or just running daily errands, the Mugen Rear Bumper Step Decal is the ultimate solution for shielding your bumper from unwanted scratches, scuffs, and dirt.

This innovative decal features a sleek carbon-fiber aesthetic that seamlessly integrates Mugen’s iconic corporate colors and logo for that perfect JDM detail.

Easy Installation: Designed for an effortless, precise fit directly on the rear bumper step.

Expanded Compatibility: While specifically crafted by Mugen for the 11th Gen FL1 and FL5 Type R, our customers have proven these look just as incredible and fit successfully on 10th Gen FK8/FK7 chassis!

Confirmed Vehicle Fitment
• 10th Gen Honda Civic (2016–2021)
• 10th Gen Civic Type R / FK8 (2017–2021)
• 11th Gen Honda Civic (2022+)
• 11th Gen Civic Type R / FL5 (2023+)
• Acura Integra Type S / DE5 (2024+)

Keep your bumper flawless and represent the infinite racing spirit. Grab your Rear Bumper Step Decal today at King Motorsports while inventory lasts!

In Stock: The Ultimate Chassis Refinement for FL5, DE5 & 11th Gen CivicExperience an unprecedented level of comfort and ...
08/28/2026

In Stock: The Ultimate Chassis Refinement for FL5, DE5 & 11th Gen Civic

Experience an unprecedented level of comfort and control with the Mugen Performance Damper Set. This isn’t just another suspension part; it’s a game-changing chassis enhancement developed specifically for Mugen in collaboration with Yamaha Motor Co., Ltd.

If you’ve been following our shop FL5 build, you know we put our parts through the wringer. After installing the dampers…The verdict? A complete transformation.

How It Works
Your car’s body constantly experiences subtle vibrations and micro-distortions that traditional coilovers and springs simply can’t eliminate. The Mugen Performance Damper uniquely adds a damping element directly to the chassis itself, designed to absorb and dissipate these tiny movements—even those measuring less than 1mm!

Filters the Buzz: Makes the chassis feel remarkably more solid and significantly less “buzzy,” offering an incredibly smooth, premium ride quality.

Elevates Handling: You’ll gain superior handling stability and precise driver control, keeping the suspension geometry perfectly planted during load shifts.

A Quieter Cabin: Noticeably reduces road harshness and noise, which even results in improved cabin audio clarity.
Engineers meticulously tuned each damper for these specific modern chassis, ensuring flawless integration and maximum effectiveness. You truly have to feel it to understand just how much these hidden parts elevate the driving experience.

Vehicle Compatibility
Direct bolt-on application for:
• 11th Gen Honda Civic (2022+)
• 11th Gen Honda Civic Type R / FL5 (2023+)
• Acura Integra Type S / DE5 (2024+)

Your Authorized US Mugen Distributor Since 1988.

Address

2130 S Danny Road
New Berlin, WI
53146

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+12625227558

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