40 Years of Siebenrock – A Heartfelt Thank You!

 

Since 1985, the name Siebenrock has stood for quality, technical expertise, and genuine passion for classic BMW motorcycles.
Our success is built on continuous development, solid engineering knowledge,

and the ambition to create products that impress with functionality and durability.

  

A major milestone – and one we’d love to celebrate with you!

 

From July 4 to 16, 2025, enjoy a special anniversary discount on selected Siebenrock items in our online shop – it’s worth a look!

 

Or come see us in person at the BMW Motorrad Days in Garmisch-PartenkirchenJuly 4–6, 2025.

Visit our stand and receive an exclusive anniversary gift – a little surprise from us to you!

 

 Your Siebenrock Team

 

While supplies last.

 

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Gearwheel for input shaft

BMW 2v Boxer models from 4/82 up to 3/85
17.5 ° 30mm

Artikelbild
€139.00

Prices incl. VAT, plus shipping costs

Ready to ship today, Delivery time appr. 2-4 workdays within Germany

  • 2322991
Gearwheel input shaft 17,5° 30mm This gear is where the power is transferred in all gears.... more
Gearwheel for input shaft
Gearwheel input shaft 17,5° 30mm
This gear is where the power is transferred in all gears. Originally, this part had a 15° gear cut. This was changed in 4/1982 to 17,5°.
Price per piece.

If your bike was manufactured after 4/1982, but before 3/1985 then this part is a direct replacement.

If your bike was manufactured before 4/1982 and never upgraded to the newer design, then you will also need to purchase a new 5th gear wheels that are also cut at 17,5°

You will also need:
Art.no. 2321997 Intermediate Shaft Gear (not available from BMW)
Output Shaft 5th Gear Wheel.
With this gear you have some choices:
Art.no. 2322993 Standard Milled gear with 5% taller gearing
Art.no. 2322992 Polished gear with 5% taller gearing for reduced friction
This is a high quality reproduction transmission gear that is better than original. Top quality precision manufacturing in Germany. This part features an undersized ID of 2/100 mm and it will have a perfect fit on used shafts.

Siebenrock product
Each original Siebenrock product bears this seal that guarantees you the highest quality possible, consistently optimized down to the last detail.

Made in Germany. Top Siebenrock quality.

Spare part for the classic BMW 2v Boxer models
R 80/7, R 80RT, R 100/7, R 100RS, R 100RT, R 100CS
R 45, R 65, R 65LS, R 65GS
R 80G/S, R 80ST
Paralever models R 80GS, R 100GS, R 100GS PD, R 80GS Basic, R 80R R 100R, R 100R Mystic
Monolever models R 65, R 65RT, R 80, R 80RT, R 100RS, R 100RT.

Compare: 23221242991/ 23-22-1-242-991

Information on product safety
Fits for BMW R2V: R 80 up to 84, R 100 up to 84, R 45 up to 84, R 65 up to 84
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Artikelbild Gear wheel 5th gear
With "X" for intermediate shaft
BMW 2-valve Boxer models

€148.70
Prices incl. VAT, plus shipping costs
Part no. 2321997
Artikelbild Gear wheel 5th gear
Long 5th gear Wiith "X"
BMW 2v Boxer models from 4/82 on

€159.50
Prices incl. VAT, plus shipping costs
Part no. 2322993
Artikelbild Transmission bearing Set
5-speed gearbox
BMW 2-valve Boxer models

€139.00
Prices incl. VAT, plus shipping costs
Part no. 2312996
Artikelbild Gear shifter unit
Repair kit
BMW 2-valve Boxer models from 9/75 on
€27.25
Prices incl. VAT, plus shipping costs
Part no. 2331910
Artikelbild Idle switch
For 5-speed gearbox
BMW 2v Boxer models from 9/75 on

€19.95
Prices incl. VAT, plus shipping costs
Part no. 6131097
Artikelbild Gearbox gasket Set
5-speed without kickstarter
BMW 2V Boxer Modelle ab 9/80
€42.90
Prices incl. VAT, plus shipping costs
Part no. 2300593
Artikelbild Transmission bearing Set
BMW 2-vakve Boxer models
5-speed gearbox
€78.00
Prices incl. VAT, plus shipping costs
Part no. 2312999
Artikelbild Bushing 2nd gear
Output shaft
BMW 2-valve Boxer models

€69.50
Prices incl. VAT, plus shipping costs
Part no. 2321806
Artikelbild Gearwheel for input shaft
17,5° 33mm
BMW 2-valve models from 3/85 on

€139.00
Prices incl. VAT, plus shipping costs
Part no. 2321326
Artikelbild Speedometer GS2 km version
BMW R 65GS, R 80 G/S, R 80GS,
R 100GS, R 80GS Basic
"Plug and Play"
€319.00
Prices incl. VAT, plus shipping costs
Part no. 6212646
Artikelbild Cylindrical roller bearing
For 5-speed gearbox
BMW 2-valve Boxer models

€66.00 €86.00
Prices incl. VAT, plus shipping costs
Part no. 2321446
Artikelbild Bearing shell conrod
BMW 2v Boxer models
Standard sized
€9.99 €12.50
Prices incl. VAT, plus shipping costs
Part no. 1124460
Artikelbild Sliding gear 3/4.
BMW 2v Boxer models from 9/80 on
For intermediate shaft
€289.00
Prices incl. VAT, plus shipping costs
Part no. 2321994
Artikelbild Oilfilter Set
Mahle
BMW 2v Boxer models without oilcooler
OX37D two-piece
€14.25
Prices incl. VAT, plus shipping costs
Part no. 1142145
Artikelbild Clutch boot
Clutch pressure bearing
For BMW 2V, 4V, K models
€19.50
Prices incl. VAT, plus shipping costs
Part no. 2313731
Artikelbild Gearbox gasket Set
5-speed with kickstarter
BMW R 45, R 65, /6, /7 up to 9/80
€49.90
Prices incl. VAT, plus shipping costs
Part no. 2300595
Artikelbild Gear wheel 3rd gear
For intermediate shaft
BMW 2-valve Boxer models

€148.70
Prices incl. VAT, plus shipping costs
Part no. 2321993
Artikelbild Valve exhaust
40mm
BMW R 90, R 100 models
30° lead-free
€48.50
Prices incl. VAT, plus shipping costs
Part no. 1134285
Artikelbild Simplex chain
With master link
BMW 2v Boxer models from 9/78 on
€32.95
Prices incl. VAT, plus shipping costs
Part no. 1131934
Artikelbild Sealing rings for inspection
BMW 2V Boxer models
€4.75
Prices incl. VAT, plus shipping costs
Part no. 0711333
Artikelbild Circuit board LED
For control light
BMW R 65GS, R 80G/S, R 80GS, R 100GS, R 80GS Basic
LED technology
€129.00
Prices incl. VAT, plus shipping costs
Part no. 6221050L
Artikelbild Speedometer cable boot Gearbox input
BMW 2-valve Boxer models
€7.90
Prices incl. VAT, plus shipping costs
Part no. 6113170
Artikelbild Valve guide
BMW 2V Boxer models
Not for R 45 and R 65
€14.30
Prices incl. VAT, plus shipping costs
Part no. 1112708
Artikelbild Gear wheel 4th gear
BMW 2-valve Boxer models
For output shaft
€198.00
Prices incl. VAT, plus shipping costs
Part no. 2322213
Artikelbild Valve cover Classic
BMW 2-valve Boxer models
€44.00 €49.75
Prices incl. VAT, plus shipping costs
Part no. 1112240
Artikelbild Gear wheel 5th gear
Long 5th gear Without "X"
BMW 2-valve Boxer

€159.50
Prices incl. VAT, plus shipping costs
Part no. 2322889
Artikelbild Crankshaft seal
BMW 2-valve models
Rear
€21.95
Prices incl. VAT, plus shipping costs
Part no. 1111739
Artikelbild Valve cover gasket
BMW 2-valve Boxer models
€3.95
Prices incl. VAT, plus shipping costs
Part no. 1112426
Artikelbild Plug engine housing
BMW 2-valve Boxer models
Ignition
€2.90
Prices incl. VAT, plus shipping costs
Part no. 1111327
Artikelbild Main bearing crankshaft
BMW 2-valve Boxer models
Standard red
€39.50
Prices incl. VAT, plus shipping costs
Part no. 1111155
Artikelbild Float
BING carburator 64/26, 64/28, 64/32, 94/40
BMW 2-valve Boxer models
€21.15
Prices incl. VAT, plus shipping costs
Part no. 1311766
Artikelbild Cover gasket
Transmission 5-speed
BMW 2-valve Boxer models

€8.95
Prices incl. VAT, plus shipping costs
Part no. 2311596
1241670A_1 Starter HD
BMW 2-valve Boxer models from 9/74 on
New part
€169.00
Prices incl. VAT, plus shipping costs
Part no. 1241670A
NEW
2313872_1 Clamp
BMW 2V Boxer models
For boot clutch pressure bearing
€5.50
Prices incl. VAT, plus shipping costs
Part no. 2313872
Artikelbild Swing Arm Boot
BMW 2-valve Boxer models
€19.95
Prices incl. VAT, plus shipping costs
Part no. 3317304
Artikelbild Brembo brake caliper
Repair kit
BMW 2-valve Boxer models
38mm
€69.90
Prices incl. VAT, plus shipping costs
Part no. 3411188
Artikelbild Indicator light cover
English lettering
BMW R 65GS, R 80G/S, R 80GS, R 100GS, R 80GS Basic
€22.00 €29.70
Prices incl. VAT, plus shipping costs
Part no. 6221755
8121099_1 Oil funnel
BMW 2v Boxer
€7.77 €9.50
Prices incl. VAT, plus shipping costs
Part no. 8121099
Artikelbild Valve Intake
38mm
BMW R 65
7mm shaft
€25.90
Prices incl. VAT, plus shipping costs
Part no. 1134092
Artikelbild Alternator rotor
New part
BMW 2-valve Boxer models

€114.65
Prices incl. VAT, plus shipping costs
Part no. 1231641
Artikelbild Gear wheel 5th gear
Long 5th gear Wiith "X"
BMW 2v Boxer models from 4/82 on

€159.50
Prices incl. VAT, plus shipping costs
Part no. 2322993
Artikelbild Gear wheel 5th gear
With "X" for intermediate shaft
BMW 2-valve Boxer models

€148.70
Prices incl. VAT, plus shipping costs
Part no. 2321997
3312100_1 Drive gear interlocking
Repair kit
BMW 2-valve Boxer models



€114.50
Prices incl. VAT, plus shipping costs
Part no. 3312100
Artikelbild Gear wheel 5th gear
Long 5th gear Without "X"
BMW 2-valve Boxer

€159.50
Prices incl. VAT, plus shipping costs
Part no. 2322889
Artikelbild Cylindrical roller bearing
For 5-speed gearbox
BMW 2-valve Boxer models

€66.00 €86.00
Prices incl. VAT, plus shipping costs
Part no. 2321446
2321516_1 Drive shaft
BMW 2v Boxer models from 9/74 up to 9/80
D=18mm 5-speed
€239.00
Prices incl. VAT, plus shipping costs
Part no. 2321516
Artikelbild Bushing 2nd gear
Output shaft
BMW 2-valve Boxer models

€69.50
Prices incl. VAT, plus shipping costs
Part no. 2321806
Artikelbild Gear shifter unit
Repair kit
BMW 2-valve Boxer models from 9/75 on
€27.25
Prices incl. VAT, plus shipping costs
Part no. 2331910
Artikelbild Gearbox gasket Set
5-speed with kickstarter
BMW 2-valve Boxer models

€56.95
Prices incl. VAT, plus shipping costs
Part no. 2300596
Artikelbild Gearwheel for input shaft
17,5° 33mm
BMW 2-valve models from 3/85 on

€139.00
Prices incl. VAT, plus shipping costs
Part no. 2321326
3317546_1 Swingarm bearing
BMW 2v Boxer models from 9/80 on
40x17x17
€38.90
Prices incl. VAT, plus shipping costs
Part no. 3317546
1131183_1 Chain tensioner Set
Simplex
BMW 2V Boxer models
€89.50
Prices incl. VAT, plus shipping costs
Part no. 1131183
Artikelbild Needle sleeve
For rocker arm
BMW 2v Boxer models from 9/75 on
€23.20
Prices incl. VAT, plus shipping costs
Part no. 1133712
Artikelbild Oil pan distance ring
Enduro Black
BMW R 65GS, R 80G/S, R 80GS, R 100GS, R 80GS Basic

€279.00
Prices incl. VAT, plus shipping costs
Part no. 1113120S
Artikelbild Gearbox With kickstarter
Overhaul
BMW 2v Boxer Paralever models
€890.00
Prices incl. VAT, plus shipping costs
Part no. 2300468
Artikelbild Gearbox Without kickstarter
Overhaul
BMW 2v Boxer Paralever models
€890.00
Prices incl. VAT, plus shipping costs
Part no. 2300461
1100103_1 Replacement Kit Extra 1000cc
Plug & Play
BMW R 100, R 100CS, R 100RS, R 100RT, R 100GS, R 100R
From 09/180 on
€1,139.00
Prices incl. VAT, plus shipping costs
Part no. 1100103
Artikelbild Valve cover Extra Touring
BMW 2v Boxer models
Oil filler opening and external screws
€119.90
Prices incl. VAT, plus shipping costs
Part no. 1112245
Artikelbild Valve cover Classic
BMW 2-valve Boxer models
€44.00 €49.75
Prices incl. VAT, plus shipping costs
Part no. 1112240
Artikelbild Oil pan distance ring
Enduro
BMW R 65, R 80G/S, R 80GS, R 100GS, R 80GS Basic

€239.00
Prices incl. VAT, plus shipping costs
Part no. 1113120
Artikelbild Valve exhaust
40mm
BMW R 90, R 100 models
30° lead-free
€48.50
Prices incl. VAT, plus shipping costs
Part no. 1134285
Artikelbild Valve intake
42mm
BMW 2v Boxer models from R 75/5 on
Not for R 45 and R 65
€25.90
Prices incl. VAT, plus shipping costs
Part no. 1134234
3353911G_1 Shock YSS
BMW R 80GS, R 100GS
"GS Sport"
€498.00
Prices incl. VAT, plus shipping costs
Part no. 3353911G
3353110Y_1 Shock Set
BMW /5, /6 and /7 models
YSS Black edition
€389.00
Prices incl. VAT, plus shipping costs
Part no. 3353110Y
3353911W_1 Shock YSS
BMW R 80GS, R 100GS
"GS Sport"
€498.00
Prices incl. VAT, plus shipping costs
Part no. 3353911W
Artikelbild Fuel filler cap 101 style
BMW 2v Boxer models
€169.00
Prices incl. VAT, plus shipping costs
Part no. 5125119S
5253843_1 Single seat cover G/S
Simple reproduction
BMW R 65GS, R 80G/S, R 80G/S PD, R 80ST, R 80GS Basic
€59.00
Prices incl. VAT, plus shipping costs
Part no. 5253843
5253335_1 Single seat GS
BMW R 80GS, R 100GS, R 80GSPD, R 100GSPD
€335.00
Prices incl. VAT, plus shipping costs
Part no. 5253335
5253835_1 Seat S
BMW R 80, R100 models from 9/83 on
€595.00
Prices incl. VAT, plus shipping costs
Part no. 5253835
Artikelbild Cylinder. Right side
Siebenrock Power Kit 860cc
BMW R 45 and R 65 models up to 9/1980
€329.00
Prices incl. VAT, plus shipping costs
Part no. 1100866R
Artikelbild Cylinder. Right side
Siebenrock Power Kit 860cc
BMW R 45 and R 65 models from 9/1980 on
€315.00
Prices incl. VAT, plus shipping costs
Part no. 1100865R
1311973_1 Atomizer
BING carburettor 64/32, 94/40
BMW 2V Boxer models
€11.40
Prices incl. VAT, plus shipping costs
Part no. 1311973
1311585_1 Throttle Shaft
BING Carburetor 64/32
BMW 2V Boxer models
€24.50
Prices incl. VAT, plus shipping costs
Part no. 1311585
1311746_1 Throttle body
BING carburetor 94/40
BMW R 100, Monolever, Paralever
€15.50
Prices incl. VAT, plus shipping costs
Part no. 1311746
1311914_1 Needle Nozzle 2.68
BING Carburetor 1/26
BMW R 50/5, R 60/5, R60/6, R 60/7
€11.40
Prices incl. VAT, plus shipping costs
Part no. 1311914
BMW R 80ST BMW R 80ST
€4,900.00
NEW
1109210_1 Cylinder "S"
Big Bore Kit "S"
98mm
€459.00
Prices incl. VAT, plus shipping costs
Part no. 1109210
NEW
3411070_1 Brake disc K Front Right side
Floating
BMW K 75 and K 100 models
€169.00 €219.00
Prices incl. VAT, plus shipping costs
Part no. 3411070
NEW
3411069_1 Brake disc K Front Left side
Floating
BMW K 75 and K 100 models
€169.00 €219.00
Prices incl. VAT, plus shipping costs
Part no. 3411069
NEW
3451100_1 Brake disc Rear Floating
For ABS
BMW K 1200LT, R 1200CL
€169.00 €259.00
Prices incl. VAT, plus shipping costs
Part no. 3451100
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