This page allows you to compare the road speed of different combinations of transmission and final drive. Click the FD ratio you want to see under the column heading of the transmission you want to match it to, and you should see a line appear (Javascript must be enabled). You can click as many as you want and they will overlay each other. There's a 'clear' button for when you want to start over.
Final Drive Gear Ratios |
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| 246 4-sp |
Type 247 5-sp | K75 etc. |
R259 5-sp |
1998-2006 six-speed * | New R1200 |
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|---|---|---|---|---|---|---|---|---|
| Std/Race/K | Std. | Enduro | Sport | |||||
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New R1200: Display speed at 1200 RPM or 5000 RPM All speeds assume 6.6 foot circumference wheel, no slippage. Blank = not possible without going crazy. For instance, mating a twinshock final drive to a K-bike. Information is certain to be incomplete. *6-speed notes: K1200RS, R1200C, and GS Sport use 'Sport.' R1150GS Adventure uses 'Enduro.' K12LT used both Sport and Standard at different times. | ||||||||
Gear sets
The following crown gearsets exist in BMW Monolever and Paralever motorcycles (not including Monolever Airheads). All have the same 20t pinion spline except for the early K100.
Type 1 pinion: 42mm tip to nut face, no groove (Airhead only)
Type 2 pinion: 28mm tip to nut face, no groove (K75/100 monolever)
Type 2a pinion: 28mm tip to nut face, no groove, 16-tooth pinion spline (early K100)
Type 3 pinion: 30mm tip to nut face, groove (K & R Paralever, R1200C)
| Ratio | Application | PN | Pinion type |
Impulse wheel? |
Other |
|---|---|---|---|---|---|
| 37/11 3.36 | K75 disc or drum | 33 12 1 454 595 | 2 | Yes | |
| R850R | 33 11 2 314 651 | 3 | |||
| 32/10 3.20 | R80GS/R | 33 12 1 457 556 | 1 | ||
| K75 disc or drum | 33 12 1 457 062 | 2 | Yes | ||
| 34/11 3.09 | R1100RS early | 33 11 2 311 577 | 3 | ||
| R100R, GS, Mystic | 33 12 1 452 572 | 1 | 5-bolt | ||
| 33/11 3.00 | K100 before 2/86 | 33 12 1 451 711 | 2a | Yes | |
| K100 after 2/86 | 33 12 1 454 236 | 2 | Yes | ||
| R1100GS, R1100R | 33 11 2 311 186 | 3 | |||
| 32/11 2.91 | K100 before 2/86 | 33 12 1 451 712 | 2a | Yes | |
| K100 after 2/86 | 33 12 1 454 234 | 2 | Yes | ||
| K1100LT | 33 12 2 311 238 | 3 | Yes | ||
| R1100RT, 1150RT | 33 11 2 330 008 | 3 | |||
| 31/11 2.82 | K100 4V, K11RS | 33 12 2 310 641 | 3 | Yes | 5-bolt |
| R11RS/RT,1150GS/R/RS/GSAdv | 33 11 2 330 020 | 3 | |||
| 33/12 2.75 | K1, K11LT, K12RS/GT/LT | 33 12 2 310 140 | 3 | Yes | 5-bolt |
| R1100S, R850C | 33 12 2 332 615 | 3 | Yes | ||
| 34/13 2.62 | K12LT | 33 12 7 661 910 | 3 | Yes | 5-bolt |
| R1200CL | 33 12 7 670 761 | 3 | Yes | ||
| 33/13 2.54 | R1200C | 33 12 2 311 663 | 3 | Yes | 4-bolt |
Pinion spline length
The spline on the Airhead Paralever pinion is longer. This is due to the fact that whereas the U-joints on most models are coaxial with the swingarm pivots, the U-joints on the Airhead driveshaft are about 12mm farther forward (at the front and rear of the swingarm). Rather than have a very long nose on the rear U-joint, BMW extended the pinion spline. Paralever Airheads have either the 3.09 or 3.20 (not in the US) gear ratio, so only two gearsets are affected by this change.
Housings and Covers
Gearsets are interchangeable among several different housings. Covers and housings can be mixed as long as the bolt size matches.
- Old style is K monolever and the early Paralevers with the shock mount on the housing
- New style is later (Oilhead and K12) Paralever with the shock mount on the swingarm.
- Smooth covers were used only on bikes with fixed brake calipers (R11RS, K12RS, 2V K)
- Cutaway covers MUST be used on bikes with the floating Brembo caliper
- R1200C components are not cross-compatibe with anything else, so are not mentioned.
STILL UNDER REVIEW
| Application | bolt | ABS | speed | PN and notes | ||
|---|---|---|---|---|---|---|
| O L D S T Y L E |
Airhead Paralever drum | M8 | - | - | plain 33 11 1 457 548 | |
| K drum | M8 | - | X | plain 33 11 1 454 095 | ||
| K disk to 3/89 | M8 | - | X | plain 33 11 1 450 805 | ||
| K disk from 3/89 | M10 | - | X | black 33 11 1 457 494 | ||
| 4V K (K1, K100RS 4V, K1100) |
M10 | - | X | silver 33 11 2 323 120 |
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| N E W S T Y L E |
R11 non-ABS K12 iABS |
M10 | - | - | silver 33 11 2 312 317 silver 33 11 2 314 707 threaded for fender black 33 11 7 668 776 |
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| R11 ABS | M10 | X | - | silver 33 11 2 330 476 silver 33 11 2 314 799 threaded for fender black 33 11 7 668 738 |
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| R11S non-ABS K12 ABS2 |
M10 | - | X | silver 33 11 2 332 380 black 33 11 7 674 451 |
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| R11S ABS2 | M10 | X | X | silver 33 11 2 335 084 | ||
| C O V E R S |
Airhead Paralever drum | M8 | - | plain 33 11 1 457 935 | ||
| K drum | M8 | - | plain 33 11 1 450 794 | |||
| Smooth | 2V K to 3/89 | M8 | - | plain 33 11 1 450 882 black 33 11 1 457 433 |
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| 2V K from 3/89 Paralever with fixed caliper* |
M10 | - | black 33 11 2 310 921 (now cutaway) yellow 33 11 2 310 724 silver 33 11 2 323 123 gold ? |
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| Cutaway | ABS w/fender tab | M10 | X | black 33 11 2 330 038 | ||
| Non-ABS w/fender tab | M10 | - | black 33 11 2 330 035 | |||
| ABS | M10 | X | black 33 11 2 330 044 | |||
| Non-ABS | M10 | - | black 33 11 2 330 041 | |||
| LT (caliper on bottom) | M10 | black 33 11 2 333 015 | ||||
* Black 10mm smooth cover for Monolever (casting 1 450 883) has smaller OD than for Paralever (casting 1 458 436). Probably a running change that never was reflected in the PN.
