www.suzukicycles.org ALL SUZUKI MOTOCYCLES EVER BUILT



Jarmo Haapamäki's solo album SPOILED BY SUCCESS out now
Please support my music career! Buy my CD... Jarmo Haapamäki, the owner and webmaster of this site.
Google
 
WEB WWW.SUZUKICYCLES.ORG



Suzuki RM400 model history
1978—1980

I have tried to tellthe RM 400 model history on this page as I know it. This page is still under construction. I would be grateful of any contributions — sales brochures, magazine ads, magazine articles, pictures, specs, facts, corrections etc. Please scan the material in JPEG format (large enough that all the details are visible) and send them to me. Please tell me the source and the publication date if possible. If you send me pictures of your own bike, please follow these instructions.

Suzuki 1978More Suzuki models from 1978
1978 Suzuki year code: C


The largest Suzuki motorcrosser of the seventies. Still air-cooled with conventional, but laid down twin shocks at the rear.

The U.S. sales brochure from '78 says this: ”Even if somebody could build an engine as good as the RM-400 Power Reed, they still couldn't beat Suzuki's air forks, aluminum works type box section arm, and laid dow, forward mounted gas-oil shocks (with reservoir) for total performance. Conical hub in front—full floating brake and magnesium hub panel in the rear.”

The first pictures below is a detail from the sales brochure I found on the vintage-suzuki.com website.
Suzuki RM400CRM 400 1978
Overall Length: 2 140 mm (84.3 in)
Overall Width: 885 mm (34.8 in)
Overall Height: 1 225 mm (48.2 in)
Seat Height:
Ground Clearance: 290 mm (11.4 in)
Wheelbase: 1 450 mm (57.1 in)
Dry Weight: 105 kg (231 lbs)
Engine type: Air-cooled 402 cc single-cylinder 2-stroke, piston and reed valve. 43 hp (32 kW)/ 6,500 rpm, 47 Nm 4,84 kg-m)/ 6,000 rpm.

Click on the image for larger format.
Suzuki RM400 RM-400 RM400CRM 400 1978
Overall Length: 2 140 mm (84.3 in)
Overall Width: 885 mm (34.8 in)
Overall Height: 1 225 mm (48.2 in)
Seat Height:
Wheelbase: 1 450 mm (57.1 in)
Ground Clearance: 290 mm (11.4 in)
Dry Weight: 105 kg (231 lbs)
Engine type: Air-cooled 402 cc single-cylinder 2-stroke, piston and reed valve. 43 hp (32 kW)/ 6,500 rpm, 47 Nm 4,84 kg-m)/ 6,000 rpm.

Click on the image for larger format.
Here's even larger picture.

1978 RM400C specifications (USA)
Engine type: Air-cooled single cylinder two-stroke, Power Reed
Cylinder displacement: 402 cc
Bore x stroke: 80 x 80 mm (3.150 x 3.150 in)
Compression ratio: 6.7 :1
Carburetor: Mikuni VM36SS
Transmission: 5-speed, constant mesh
Lubrication system : Fuel-oil mixture
Starting system: Kick starter
Front suspension: Air/oil-damped, leading axle
Rear suspension: Aluminum box type, gas-oil shocks, 2 dampening adjustments, 3 load settings
Front suspension stroke: 249mm (9.8 in)
Rear suspension travel: 251mm (9.9 in)
Front brake: Internal expanding
Rear brake: Internal expanding, full floating
Front tyre dimension: 3.00-21-4PR, full knobby
Rear tyre dimension: 4.50-18-4PR, full knobby
Fuel tank capacity:: 8,5 liter (2.2/1.9 US/UK gal.)
Color: Yellow


Suzuki 1979More Suzuki models from 1979
1979 Suzuki year code: N


Modernized appearance and larger engine. The U.S. sales brochure from '79 tells this about the model: ”Power Reed engine; CDI ignition; improved clutch release mechanis; 5-speed trans;leading axle rear forks; forward mounted, gas-oil remote reservoir shocks, 2-way damping adjustment, 3-way spring load settings (11.8" rear wheel travel); full floating rear brake; magnesium brake panels/engine side covers; heavy duty chain tensioner and chain guide; extra-rigid, extruded aluminum swing arm; self-cleaning aluminum alloy rims; plastic fuel tank; slim-styled at 223 lbs.”

The picture below is a detail from the sales brochure I found on the vintage-suzuki.com website. The next two pictures show a restored '79 RM400N. “This was restored with mostly NOS parts including tank, seat, all plastic, forks etc,” says Chris, the owner.
Suzuki RM400NRM 400 1979
Overall Length: 2,145 mm (84.4 in)
Overall Width: 880 mm (34.6 in)
Overall Height: 1,235 mm (48.6 in)
Seat Height:
Ground Clearance: 350 mm (13.8 in)
Wheelbase: 1,445 mm (56.9 in)
Dry Weight: 101 kg (223 lbs)
Engine type: Air-cooled 417 cc single-cylinder 2-stroke, Reed valve.

Click on the image for larger format.
Suzuki RM400NRM 400 1979
Overall Length: 2,145 mm (84.4 in)
Overall Width: 880 mm (34.6 in)
Overall Height: 1,235 mm (48.6 in)
Seat Height:
Ground Clearance: 350 mm (13.8 in)
Wheelbase: 1,445 mm (56.9 in)
Dry Weight: 101 kg (223 lbs)
Engine type: Air-cooled 417 cc single-cylinder 2-stroke, Reed valve.

Click on the image for larger format.
Here's even larger picture.
Suzuki RM400NRM 400 1979
Overall Length: 2,145 mm (84.4 in)
Overall Width: 880 mm (34.6 in)
Overall Height: 1,235 mm (48.6 in)
Seat Height:
Ground Clearance: 350 mm (13.8 in)
Wheelbase: 1,445 mm (56.9 in)
Dry Weight: 101 kg (223 lbs)
Engine type: Air-cooled 417 cc single-cylinder 2-stroke, Reed valve.

Click on the image for larger format.
Here's even larger picture.

1979 RM400N specifications (USA)
Engine type: Air-cooled single cylinder two-stroke, Power Reed
Cylinder displacement: 417 cc
Bore x stroke: 80 x 83 mm (3.150 x 3.268 in)
Compression ratio: 7,0 :1
Carburetor: Mikuni VM36SS
Transmission: 5-speed, constant mesh
Lubrication system : Fuel-oil mixture
Starting system: Kick starter
Front suspension: Air/oil-damped, leading axle
Rear suspension: Aluminum box type, gas-oil shocks, 2 dampening adjustments, 3 load settings
Front suspension stroke: 285mm (11.2 in)
Rear suspension travel: 300mm (11.8 in)
Front brake: Internal expanding
Rear brake: Internal expanding, full floating
Front tyre dimension: 3.00-21-4PR, full knobby
Rear tyre dimension: 4.50-18-4PR, full knobby
Fuel tank capacity:: 8,5 liter (2.2/1.9 US/UK gal.)
Color: Yellow


Suzuki 1980More Suzuki models from 1980
1980 Suzuki year code: T


New graphics but basically the same machine as the '79 RM400N. Wider 5.10-18 rear wheel, more ground clearance, a little heavier. You will find more specs on the RM400 magazine articles page (Dirt Bike article, May 1980).

The pictures of the Massimo Pipino's RM400T are taken recently and the bike is not 100% original but quite close.
Suzuki RM400TRM 400 1980
Overall Length: 2,145 mm (84.4 in)
Overall Width: 880 mm (34.6 in)
Overall Height: 1,235 mm (48.6 in)
Seat Height: 990 mm (39.0 in)
Ground Clearance: 365 mm (14.4 in)
Wheelbase: 1,445 mm (56.9 in)
Dry Weight: 103 kg (227 lbs)
Engine type: Air-cooled 417 cc single-cylinder 2-stroke, Reed valve.

Click on the image for larger format.
Here's even larger picture.
'79 RM 400 RM-400

Suzuki RM400N


Suzuki RM400N


'79 RM 400 RM-400
RM 400 1980

Owner: Massimo Pipino,
Torino, Italy

Comments: ”This is the bike I used to ride in vintage MX championship. It's a Suzuki RM400. It was built in 1979 and I bought it two years ago.

It is in its original shape. The only thing I replaced is the handlebar, because i prefer the shape of Renthal.

The bike is very easy to ride, powerful but not brutal like, for example, the later KTM 495/'91. It's not too heavy and you can ride it like it was a 250cc.

Great bike!”

Here's more visitor's Suzuki pictures.

 



More: Suzuki RM-RMX series

More: All Suzuki models


This free site is managed by Jarmo Haapamäki.
If you find this site helpful, please leave a donation for Jarmo
so you can enjoy the spirit of giving too.


Came here from a search engine?
Click at the home button below to get to the main page with frames.

HOME   FAQ
Web shopping






CMS-Japanese Motorcycle Supply Parts

Great Selection & Great Prices on Street Helmets




Google
 
WEB WWW.SUZUKICYCLES.ORG

Free Online Metric Calculator

A web page that helps to convert volume (capacity), weight, length, area and temperature, power and energy measures between U.S./Imperial and SI (Metric) units.