The New BMW R90S Site

Welcome to the new R90S Website!

This is the new location for, which has become a part of the Vintage BMW Motorcycle Owners (VBMWMO) website. This R90S homepage is your portal to news, information, comraderie and help with the BMW R90S motorcycle, produced from 1974-1976 in TT Silver Smoke and Daytona Orange paint.

If you're an existing member of the R90S forum, you'll find that your account has been moved over, and any posts you may have made are now a part of the VBMWMO Forum. To login, just click on the login link above on the right, in the banner.

We also suggest that you visit the home page of the R90SWorldNet mailing list, where you can find a huge amount of detail and information about this special model.

Model Specifications
Displacement 898cc
Cylinders 2
Bore x Stroke (mm) 90 x 70.6
HP @ RPM 67 @ 7000
Compression Ratio 9.5:1
Valves OHV, 2 per cylinder
Clutch Dry, single plate, cable operated
Transmission 5 speed, foot shifted
Final Drive Driveshaft
Running Gear
Frame Tubular steel double cradle
Front Suspension Hydraulically damped telescopic fork
Rear Suspension Twin shock swingarm
Front Brakes Dual ATE 260mm disc with single piston
Rear Brakes 200mm drum, single leading shoe
Ignition Battery/coil
Spark Plugs Bosch W5DC
Generator Bosch G1 14 13V 21A 280W
Capacities & Measurements
Weight 220kg
Fuel 24l
Wheelbase 1465mm
Top Speed 200kph
Number Produced 17465
by beemererik
Does anyone have a set of 1974 R90S 14mm fork sliders in good condition. PN 31421233150 and 31421233151. I am working...
Last updated: 1 week 4 days ago; 1 Replies
by wolds
looks like I'm going to have to replace both pistons. What are my alternatives to BMW replacements. Anyone make SS...
Last updated: 2 weeks 3 days ago; 4 Replies
by stevdmo
I have this 1975 R90S VIN 4980313 that I am getting ready to sell and am wondering how to determine it's value. I have...
Last updated: 2 weeks 5 days ago; 4 Replies
by wolds
I have an opportunity to purchase a friend of mines 76 R90S. He is the original owner and the bike has 38000 miles on...
Last updated: 3 weeks 1 day ago; 12 Replies
by sgnden
Hello: Brand new to this group. Thanks for being here. I have owned 10 bikes in my years but never a vintage airhead....
Last updated: 3 weeks 6 days ago; 8 Replies
by tobydog61
Need to find a set handlebars for my '75 R90S that match as closely as I can the original bars that came on the bike....
Last updated: 5 weeks 3 days ago; 5 Replies
by tobydog61
hey everybody, new guy here. I have been working on, restoring, and just plain having fun with old bikes for quite...
Last updated: 6 weeks 6 days ago; 15 Replies
by ranbush
There is a nice-looking R90S that is for sale on the IBMWR list, but I have some questions about it. The bike is...
Last updated: 9 weeks 2 days ago; 9 Replies
by Darryl.Richman
I saw someone talk about the Katdash on the R90SWorldnet mailing list ( last...
Last updated: 16 weeks 4 days ago; 2 Replies
by RickR90s
Hello there, new member here but have been an owner of my '74 R90s since 1980. The bike has 136k on it and I've ridden...
Last updated: 18 weeks 18 hours ago; 5 Replies