The Japanese tuning atelier Mugen has presented a full catalog of accessories and kits for the new Honda Prelude. The main news was the limited Spec.III upgrade kit.
Full Catalog of Upgrades from Mugen
After teasers in September 2025, Mugen has finally published the full list of upgrades for the new Honda Prelude. At the top of the list is the ultra-rare “Spec.III” kit, executed in a retro style and limited to a production run of just 16 cars.
The Spec.III kit serves as a modern tribute to the 1987 Spec.II kit created for the third-generation Prelude. The new version includes a full carbon fiber “Group A” aero kit and a sport exhaust system. However, upgraded dampers, brake pads, and BBS wheels are still sold separately.
Uniqueness of the Limited Spec.III Series
To give the Spec.III its own identity, Mugen adds exclusive decals and a serial badge. The graphics run along the doors and rear fenders, following the window line. Executed in red, gold, and black colors on a gray background, the stickers give a vintage look to the modern hybrid coupe. Most visual differences between this and the standard kit are quite restrained.
For collectors and fans, the main attraction is likely the numbered plaque, executed in motorsport colors with the inscription “Mugen Prelude Spec.III”.
The Spec.III kit costs 1,650,000 yen (approximately $10,510), but money alone does not guarantee an order. Due to limited production, Mugen uses a lottery system. Applications are accepted from January 8 to February 27, 2026, and the 16 winners will be announced on March 19. Shipments of these exclusive units are scheduled to begin on June 19.
Details for the General Public
If you are not pursuing the goals of the limited series, individual “Group A” parts are readily available and can be ordered separately.
Components that anyone can purchase include a two-piece front splitter for 242,000 yen, side skirts for 330,000 yen, and carbon mirror caps for 110,000 yen. The exterior transformation is completed by rear bumper extensions for 253,000 yen, a rear diffuser for 209,000 yen, and a trunk lid spoiler for 220,000 yen.
For the interior, Mugen offers branded floor mats for 46,200 yen, a matching trunk mat for 30,800 yen, and scuff plates for 29,700 yen, all specifically designed for the new Prelude.
Performance and Hardware
For those interested not only in appearance, Mugen also supplies performance components. A stainless steel sport exhaust system costs 341,000 yen. A set of 19-inch forged BBS wheels will set you back 704,000 yen. Suspension upgrades include Yamaha-tuned dampers for 143,000 yen and high-performance brake pads for 52,800 yen.
Finally, Mugen offers a range of smaller accessories such as brake and clutch reservoir caps, various stickers, oil filler caps, lug nuts and wheel center caps, key fobs, and a blue hydrophobic film for the exterior mirrors.
Total Cost of the Full Kit
If you tick every item in the Mugen catalog, the total sum would be 2,721,240 yen (approximately $17,300) excluding installation costs. This is more than the price of a new Prelude, which in Japan starts from 6,179,800 yen (approximately $39,400), making it more expensive than the Nissan Z and Toyota GR Supra, despite not having the most powerful hybrid powertrain. In the USA, the Japanese coupe starts from $42,000 plus destination charges.
This launch clearly demonstrates Mugen’s strategy aimed at two different audiences: collectors willing to enter a lottery for the right to own a unique artifact, and a broad circle of enthusiasts who can improve their car with individual parts. The limited Spec.III series will undoubtedly become a coveted item, turning into a future collectible rarity, while the other components will ensure the brand’s accessibility to a larger number of people. This approach underscores the Prelude’s status as a car for true connoisseurs, for whom both technical characteristics and the model’s cultural heritage are important.