A 1/12 scale finished model of the Honda CB400FOUR, a 4-stroke, 4-cylinder, 400cc "Yonfour" that could be ridden with a medium-grade license back when the license system changed. This model is faithfully reproduced down to the smallest detail! | Aoshima - Motopeek - Latest Motorcycle News, Reviews & Updates

Highly sought-after, out-of-print machines are now available as complete bikes!

[Pre-order start date and time] Thursday, November 21, 2024, 14:00 / Scheduled release date: May 2025

From left to right in the photo: Parakeet Yellow (398cc version), Light Ruby Red (398cc version), Varnish Blue (408cc version / color pattern only).

The legendary Honda CB400FOUR, a 398cc model first released in 1976 (Showa 54), is now available as a complete bike series (the varnish blue was used on the original 408cc version, but not on the 398cc version; the photo only reproduces the color pattern).

The bike’s distinctive silhouette has been faithfully reproduced, including its distinctive color pattern, wheel shape, and the 4-into-1 exhaust system, which has been called a work of art. The frame and tank are made of realistic die-cast, resulting in a high-level form with a sense of weight and texture.

Light Ruby Red

Parakeet Yellow

Burnished Blue

*Note: Varnish Blue is available on the 408cc version. This color is not available on the 398cc version.

Product specifications

Price: ¥4,620 (tax included) 
Release: Scheduled for release in May 2025 
Pre-order start date and time: 2:00 PM, Thursday, November 21, 2024 
Publisher: Skynet 
Distributor: Aoshima Bunka Kyozai Co., Ltd.
・Pre-painted, finished product
・Moveable steering and rear suspension
・Materials: Body: Die-cast, ABS, PS Tires: TPR
・Scale: 1/12
・Size: Approximately 173mm in length
・Display base included
・Original Aoshima product 
*The varnish blue color was used on the original 408cc version and is not used on the 398cc version. 
*The image is a prototype. Actual product may differ. 
* Under supervision of Honda Motor Co., Ltd. 
[Product page] 
https://www.aoshima-bk.co.jp/product/?s=Honda+CB400FOUR&seriesname=%E5%AE%8C%E6%88%90%E5%93%81%E3%83%90%E3%82%A4%E3%82%AF&when1-year=2025&when1-day=05&when2-year=2025&when2-day=05

It’s normal for a good bike to cost several million yen! What is the super rare vintage model “Honda CB400FOUR” worth over 10 million yen?

The first-generation Honda Dream CB400FOUR, a 408cc version, was released in 1974. The side color is the same as the gas tank. The handlebars are flat.

Another feature of the Yonfour is its beautiful collective muffler, which has been called a “work of art.”

The photo shows the bike in Light Ruby Red. The 408cc version also has a Light Ruby Red side color (the 398cc version has black).

The Honda Dream CB400FOUR in burnish blue. This color has been discontinued for the 398cc version.

The Honda Dream CB400FOUR was a pioneering model equipped with a four-cylinder engine in the 400cc class, released in December 1974. The Dream CB400FOUR, also known as the “Yon-Four” due to its beautifully integrated muffler, is still revered as a legendary model. On the used car market, it’s common to see it fetch several million yen, with top-quality examples commanding over 10 million yen, making it a truly treasured model.

The first generation’s engine was an air-cooled, 4-stroke, SOHC, in-line 4-cylinder, 408cc. In 1975 (Showa 50), the year after its release, the driver’s license system was revised, and motorcycle licenses were classified into small-sized licenses under 125cc, medium-sized licenses under 400cc, and unrestricted licenses for over 400cc. In response to this, the 398cc models “CB400FOUR-I” and “CB400FOUR-II” were released in 1976 (Showa 51) (the “Dream” name was dropped).

The 398cc model, which can be ridden with a medium-sized license, keeps the bore diameter (51.0mm) the same, but the stroke has been shortened from 50.0mm to 48.8mm. The key point is that it is a high-revving short-stroke type that increases engine speed to gain power. As a result, maximum output has been reduced from 37ps/8,500rpm to 36ps/8,500rpm, and maximum torque has been reduced from 3.2kg-m/7,500rpm to 3.1kg-m/7,500rpm.

The left and right side covers on the 408cc version were the same color as the fuel tank, but on the 398cc version they are blacked out. The tank color continues to be the popular Light Ruby Red. The Varnish Blue color has been discontinued for the 398cc version, and a new color, Parakeet Yellow, has been added.

The CB400FOUR-I has a continental feel and features flat handlebars that allow for sporty riding, including cornering, while the CB400FOUR-II has an orthodox style that is suitable for long touring and features standard handlebars that are easy to handle at low speeds, such as when riding in urban areas.

The 398cc version of the Honda CB400FOUR-I. The I features sporty flat handlebars. The handlebar width is 705mm and the handlebar height is approximately 40mm.

Honda CB400FOUR-II. The II features an upturned standard handlebar. The handlebar width is 780mm and the handlebar height is approximately 111mm.

The photo shows the new color Parakeet Yellow, which has been added at 398cc.

Honda CB400FOUR Main Specifications

*Figures in parentheses are for the 398cc version of FOUR-I and FOUR-II.Length

x Width x Height: 2050mm x 705mm x 1040mmWheelbase

: 1490mmSeat

Height: 1355mmDisplacement

: 408cc (398cc)

Engine Type: Air-cooled 4-stroke OHC 8-valve in-line 4-cylinderBore

x Stroke: 51.0mm x 50.0mm (51.0mm x 48.8mm)

Compression Ratio: 9.4:1Maximum

Power: 37ps/8500rpm (36ps/8500rpm)

Maximum Torque: 3.2kg-m/7500rpm (3.1kg-m/7500rpm)

Starting Method: Electric starter/kick

starterTransmission: 6-speed return

typeSuspension: Front telescopic, rear swing armBrakes

: Front hydraulic single disc, rear

drumSeats:

2Fuel Tank Capacity: 14L