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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Pressure ring

BMW R 100S, R 100RS, R 100RT up to 9/80
For exhaust 40mm

Artikelbild
€9.90

Prices incl. VAT, plus shipping costs

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

  • 1821448
This is an OEM quality replacement pressure ring for the exhaust connection at the cylinder head.... more
Pressure ring
This is an OEM quality replacement pressure ring for the exhaust connection at the cylinder head. Fits all BMW 2V twins with 40mm headers..

One per side needed.
Price per piece.

For the classic BMW 2-vake Boxer models
R 100S, R 100RS, R 100RT tup to 9/1980.

Compare: 18211234448 / 18-21-1-234-448

Information on product safety
Fits for BMW R2V: R 100 up to 84
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Artikelbild Clamping ring
Exhaust 40mm
BMW R 100S, R 100RS, R 100RT

€13.95
Prices incl. VAT, plus shipping costs
Part no. 1821449
Artikelbild Exhaust star nut
BMW /7, Monoelver, Paralever models
With short fins
€37.20
Prices incl. VAT, plus shipping costs
Part no. 1821721
Artikelbild Clamping ring
38mm
BMW 2-valve Boxer models

€11.95
Prices incl. VAT, plus shipping costs
Part no. 1821586
Artikelbild Oilfilter Set
Mahle
BMW 2v Boxer models with oilcooler
OX36D two-piece
€14.90
Prices incl. VAT, plus shipping costs
Part no. 1142146
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 Manifold Set
40mm Chrome
BMW R 100S, R 100RS, R 100RT

€398.00
Prices incl. VAT, plus shipping costs
Part no. 1811223
Artikelbild Valve cover gasket
BMW 2-valve Boxer models
€3.95
Prices incl. VAT, plus shipping costs
Part no. 1112426
Artikelbild Pressure ring
Exhaust 38mm
BMW 2-vakve Boxer models

€9.90
Prices incl. VAT, plus shipping costs
Part no. 1821585
Artikelbild Clutch boot
Clutch pressure bearing
For BMW 2V, 4V, K models
€19.50
Prices incl. VAT, plus shipping costs
Part no. 2313731
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 Shaft seal
Transmission Input 5 speed
BMW 2-valve Boxer models

€9.95
Prices incl. VAT, plus shipping costs
Part no. 2312726
Artikelbild Pushrod tube seal
18mm
BMW 2v Boxer models from 9/75 on
€3.95
Prices incl. VAT, plus shipping costs
Part no. 1132995
Artikelbild Valve cover Classic
BMW 2-valve Boxer models
€44.00 €49.75
Prices incl. VAT, plus shipping costs
Part no. 1112240
Artikelbild Oil drain plug engine
BMW 2-valve Boxer models
Magnetic M 18x1,5
€8.75
Prices incl. VAT, plus shipping costs
Part no. 0711143
Artikelbild Diaphragm spring
BMW 2-valve Boxer models from 9/80 on
€65.00
Prices incl. VAT, plus shipping costs
Part no. 2121353
Artikelbild Carb gasket Set

BING carburator
64/26, 64/28, 64/32, 94/40
BMW 2-valve Boxer models
Without diaphragm
€19.95
Prices incl. VAT, plus shipping costs
Part no. 1311951
Artikelbild Airfilter
Mahle
BMW 2-valve Boxer models up to 9/80
LX194
€13.25
Prices incl. VAT, plus shipping costs
Part no. 1372382
Artikelbild Clutch centering tool
BMW 2-valve Boxer models from 9/80 on
€15.80
Prices incl. VAT, plus shipping costs
Part no. 2123512Z
Artikelbild Pushrod tube
18mm
BMW 2v Boxer models from 9/75 on
Stainless steel
€24.90
Prices incl. VAT, plus shipping costs
Part no. 1111904
Artikelbild Carb gasket Set
BING carburator 64/26, 64/28, 64/32, 94/40
for 2 carburator
BMW 2-valve Boxer models

€99.50
Prices incl. VAT, plus shipping costs
Part no. 1311051
Artikelbild Swing Arm Boot
BMW 2-valve Boxer models
€19.95
Prices incl. VAT, plus shipping costs
Part no. 3317304
3317546_1 Swingarm bearing
BMW 2v Boxer models from 9/80 on
40x17x17
€38.90
Prices incl. VAT, plus shipping costs
Part no. 3317546
Artikelbild Sealing rings for inspection
BMW 2V Boxer models
€4.75
Prices incl. VAT, plus shipping costs
Part no. 0711333
1131183_1 Chain tensioner Set
Simplex
BMW 2V Boxer models
€89.50
Prices incl. VAT, plus shipping costs
Part no. 1131183
8121099_1 Oil funnel
BMW 2v Boxer
€7.77 €9.50
Prices incl. VAT, plus shipping costs
Part no. 8121099
Artikelbild Clamp for rubber bellow
85mm
BMW 2-valve Boxer models
Between swingarm and transmission
€12.95
Prices incl. VAT, plus shipping costs
Part no. 3317197
Artikelbild Seal for wheel bearing
BMW 2-valve Boxer models
€7.50
Prices incl. VAT, plus shipping costs
Part no. 3631836
Artikelbild Oil pan distance ring
BMW 2-valve Boxer models
€111.00 €139.00
Prices incl. VAT, plus shipping costs
Part no. 1113100
Artikelbild Rubber mounts
Diode plate
BMW 2-valve Boxer models

€3.95
Prices incl. VAT, plus shipping costs
Part no. 1231131
Artikelbild Fork gaiter
11 ribs
BMW /6 and /7 models
€37.25
Prices incl. VAT, plus shipping costs
Part no. 3142908
Artikelbild Cylinder base gasket
Aluminium 99mm
BMW /5, /6, /7 models up to 9/80

€3.95
Prices incl. VAT, plus shipping costs
Part no. 1111001
Artikelbild Silencer Set
40mm Chrome
BMW R 100S, R 100RS, R 100RT

€398.00
Prices incl. VAT, plus shipping costs
Part no. 1811215
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 Cylinder gasket Set
From 9/1980 on
For Power Kit 1000cc, Replacement Kit
1000cc, BMW R 100 models from 9/80 on
€47.50
Prices incl. VAT, plus shipping costs
Part no. 1100101
Artikelbild Valve cover Extra
BMW 2v Boxer models
External Screws
€55.00 €65.00
Prices incl. VAT, plus shipping costs
Part no. 1112241
Artikelbild Oil pan gasket
BMW 2-valve Boxer models
€6.95
Prices incl. VAT, plus shipping costs
Part no. 1113427
Artikelbild Clutch disc
BMW /5, /6, /7 models up to 9/80
€109.00
Prices incl. VAT, plus shipping costs
Part no. 2121332L
Artikelbild Handlebar GS
BMW G/S and GS models
€85.90
Prices incl. VAT, plus shipping costs
Part no. 3271272
Artikelbild Pushrod tube seal
16mm
BMW R 50/5, R60/5, R 75/5. R 60/6, R 75/6, R 90/6, R 90S
€4.95
Prices incl. VAT, plus shipping costs
Part no. 1132267
Artikelbild Cap nut stainless steel
BMW 2-valve Boxer models
For valve cover
€6.90
Prices incl. VAT, plus shipping costs
Part no. 1112330
Artikelbild Clamping ring
Exhaust 40mm
BMW R 100S, R 100RS, R 100RT

€13.95
Prices incl. VAT, plus shipping costs
Part no. 1821449
NEW
1811441_1 Manifold
40mm Chrome
BMW R 100RS, R 100RT, R 100S
Left side

€186.00
Prices incl. VAT, plus shipping costs
Part no. 1811441
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 Pushrod tube seal
18mm
BMW 2v Boxer models from 9/75 on
€3.95
Prices incl. VAT, plus shipping costs
Part no. 1132995
Artikelbild Exhaust star nut
BMW /7, Monoelver, Paralever models
With short fins
€37.20
Prices incl. VAT, plus shipping costs
Part no. 1821721
Artikelbild Replacement Kit Extra 1000cc
99mm Plug & Play
BMW R 100/7, R 100S, R 100RS, R 100RT
Up to 9/1980
€1,159.00
Prices incl. VAT, plus shipping costs
Part no. 1100105
1311746_1 Throttle body
BING carburetor 94/40
BMW R 100, Monolever, Paralever
€15.50
Prices incl. VAT, plus shipping costs
Part no. 1311746
Artikelbild Wind deflector. Windshield
Painted black
BMW R 65GS, R 80G/S, R 80G/S PD, R 80GS, R 100GS, R 80GS Basic

€219.00
Prices incl. VAT, plus shipping costs
Part no. 4663902S
Artikelbild Tension springs Set
Oil pan distance ring
BMW 2v Boxer models
€18.50
Prices incl. VAT, plus shipping costs
Part no. 1113103
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
1131183_1 Chain tensioner Set
Simplex
BMW 2V Boxer models
€89.50
Prices incl. VAT, plus shipping costs
Part no. 1131183
Artikelbild Instrument housing
Light Gasket
BMW 2V Boxer models
€1.50
Prices incl. VAT, plus shipping costs
Part no. 6211669
Artikelbild Gasket Set
For Karcoma fuel tap
BMW 2-valve Boxer models

€12.95
Prices incl. VAT, plus shipping costs
Part no. 1612869
Artikelbild Oil cooler Kit
BMW 2v Boxer models
Centered position
€469.00
Prices incl. VAT, plus shipping costs
Part no. 1142400
Artikelbild Power Kit 1000cc
Plug & Play
BMW R 80, R 80RT, R 80G/S, R 80ST, R 80GS, R 80R
€888.00 €1,049.00
Prices incl. VAT, plus shipping costs
Part no. 1100080
Artikelbild Speedometer cable boot Gearbox input
BMW 2-valve Boxer models
€7.90
Prices incl. VAT, plus shipping costs
Part no. 6113170
Artikelbild Conrod screw
ARP Racing
Siebenrock Big Bore Kit
€69.00
Prices incl. VAT, plus shipping costs
Part no. 1109004
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 Conrod
Sieenrock Big Bore Kit Touring
150,5 mm
€309.00
Prices incl. VAT, plus shipping costs
Part no. 1109044
Artikelbild Silencer Set
40mm Chrome
BMW R 100S, R 100RS, R 100RT

€398.00
Prices incl. VAT, plus shipping costs
Part no. 1811215
Artikelbild Cylinder with stud bolts
From 750cc on up to 9/1980
Power Kit 1000cc, Replacement Kit 1000cc, and BMW 2v models
€329.00
Prices incl. VAT, plus shipping costs
Part no. 1100111
Artikelbild Compression ring for clutch
BMW /5, /6, /7 models up to 9/80
€109.00
Prices incl. VAT, plus shipping costs
Part no. 2121666
Artikelbild Pressure plate clutch
BMW /5, /6,/7 models up to 9/80
€129.00
Prices incl. VAT, plus shipping costs
Part no. 2121801
Artikelbild Instrument housing Rubber ring
BMW 2v Boxer models
€12.95
Prices incl. VAT, plus shipping costs
Part no. 6211676
Artikelbild Asymmetrical camshaft Kit
BMW 2v Boxer models from 9/78 on
€429.00
Prices incl. VAT, plus shipping costs
Part no. 1131804
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
1112261_1 Valve cover Enduro
BMW 2v Boxer models
Extra External screws
€76.99 €89.90
Prices incl. VAT, plus shipping costs
Part no. 1112261
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 O-Ring seal cylinder base
BMW 2V Boxer models
Small
€1.10
Prices incl. VAT, plus shipping costs
Part no. 1111141
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 Cylinder head gasket
BMW 2-valve Boxer 1000cc and
Power Kit 860cc, Power Kit 1000cc
€9.99 €12.90
Prices incl. VAT, plus shipping costs
Part no. 1112715
Artikelbild Throttle cable
BMW Paralever models
40mm carb Right side
€27.90
Prices incl. VAT, plus shipping costs
Part no. 3273828
Artikelbild Throttle cable
BMW Paralever models
40mm carb Left side
€27.90
Prices incl. VAT, plus shipping costs
Part no. 3273827
Artikelbild Steering lock
With key
BMW 2v Boxer models from 9/73 on
€49.50
Prices incl. VAT, plus shipping costs
Part no. 5125274
3353110Y_1 Shock Set
BMW /5, /6 and /7 models
YSS Black edition
€389.00
Prices incl. VAT, plus shipping costs
Part no. 3353110Y
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
NEW
5253128_1 Seat Support rubber
10mm
BMW 2-valve Boxer models
€2.95
Prices incl. VAT, plus shipping costs
Part no. 5253128
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