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 boxertwinjeff
Hi, will be checking out a 75 DO in a few weeks time, which has apparently sat in a shed for 15 years & not started...
Last updated: 14 hours 26 min ago; 0 Replies
by bmwsog
I have owned my share of older airhead BMWs-I am looking hard at a 1974 R-90 S in good shape. (Own a 77 R 100-S ) But...
Last updated: 1 day 22 hours ago; 10 Replies
by SteveH
Thinking of replacing my rear wheel spindle with a new stainless steel on from Chris Shaw engineering. Im wondering if...
Last updated: 4 days 3 hours ago; 6 Replies
by p_reale
Now that I have just about completed the restoration on my '76, I could finally take it on the road. Unfortunately, the...
Last updated: 1 week 2 days ago; 5 Replies
by p_reale
I would like to use a Twinmax to synchronize my Dellortos, but I don't know where the float chamber vent is. Please...
Last updated: 1 week 4 days ago; 8 Replies
by caryboat
Just picked up a 1976 R90S in my collection. The clutch engages a little high for me and I want it to engage about 1"-1...
Last updated: 2 weeks 2 days ago; 1 Replies
by ScottA
This bike is new to me, bought last week from a friend with retirement plans. 36k miles and in decent shape, all...
Last updated: 2 weeks 2 days ago; 3 Replies
by zeitgeist
All, New here and wanted to share a blog of some pictures from the road (and off the road) with my 1975 R90S "to be...
Last updated: 3 weeks 1 day ago; 0 Replies
by thunderbolt
carb synking
Last updated: 4 weeks 2 days ago; 3 Replies
by thunderbolt
anybody know the top end on a 76 r90 mine doesnt go more than 114 mph and the engine takes on a different sound also @...
Last updated: 4 weeks 5 days ago; 2 Replies