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 2valve
Did any of the R90S models /certain build dates/ exported to ? have chromed rear sub frame bolts ( shock bolts / front...
Last updated: 2 days 11 hours ago; 10 Replies
by boxertwinjeff
Hi, my Bm mechanic recently ran an overhaul kit through the calipers including pistons, now I've got the bike home I've...
Last updated: 3 days 12 hours ago; 10 Replies
by san-arthur
I uninstalled the battery to recharge it, it was flat. It´s heavy! 19.2 lbs!!
Last updated: 3 days 18 hours ago; 7 Replies
by san-arthur
HI everyone I’m going to service the brakes on my R90S. I need ATE’ front brake caliper O-rings, which is sandwiched...
Last updated: 2 weeks 19 hours ago; 25 Replies
by bikealan
We have recently bought another R90S and and have just discovered a coincedence that is hard to believe. The older one...
Last updated: 2 weeks 6 days ago; 4 Replies
by jknightwi
I own a 1976 r90s. Another owner dropped it, I suppose, and I need a new fairing painted the original orange color. Can...
Last updated: 4 weeks 19 hours ago; 4 Replies
by jberzins
Hello, I found these in my shop and I seem to remember them being original R90S mirrors. However, I am not sure. I...
Last updated: 7 weeks 3 days ago; 8 Replies
by Beemer54
In January 'The Airhead' produced a special R90S issue of its on-line magazine. This couldn't have been done without...
Last updated: 13 weeks 4 hours ago; 1 Replies
by Höffner
How does the U.S. spec R90S differ from bikes sent to the rest of the world? Does a U.S. version differ in desirability?
Last updated: 19 weeks 6 days ago; 1 Replies
by abstruse1
I just finished upgrading the forks on my '76 90S with RaceTech springs and emulators. I also replaced the rear shocks...
Last updated: 22 weeks 1 day ago; 4 Replies