We’re taking a little break. 

From 

24 August to 4 September 2026,

things will be a little quieter around here – but our online shop never takes a holiday.

We’ll be happy to receive your orders as usual.

From 7 September 2026, we’ll be back and processing everything with the speed, reliability and

Boxer passion you know us for.

 

 

Jump to main content
Categories

Repair kit Brake master cylinder 16mm

BMW R 75/6, R 90/6, R 90S

3431925_1
€109.00

Prices incl. VAT, plus shipping costs

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

  • part no.: 3431925
Description Downloads 1 Evaluations 0
Description
Brake master cylinder kit for dual Disc models - includes 16mm piston, all seals and rclips.... more
Close menu
Repair kit Brake master cylinder 16mm
Brake master cylinder kit for dual Disc models - includes 16mm piston, all seals and rclips.

Repairing instead of replacing is the motto of this clever repair solution for the master cylinder of the two-valve Boxer: The complete "inner workings" are replaced in just one step and the brake is tight, smooth-running and safe again.

TIP
You can find the specifications for your piston diameter on the underside of the master brake cylinder.

Attention:
Only for repair in a specialist workshop.

Price for set.

Spare part for the classic BMW two-valve Boxer models
R 75/6, R 90/6, R 90S is 9/1975 with two brake discs.

Compare 34 31 1 234 925 / 34311234925

Information on product safety
Fits for BMW R2V:
R 75/6
1973-1976
R 90/6
1973-1976
R 90S
1973-1976
Downloads 1
more
Schließen
Downloads "Repair kit Brake master cylinder 16mm"
Evaluations 0
Read, write and discuss reviews... more
Close menu
Customer evaluation for "Repair kit Brake master cylinder 16mm"
Write an evaluation
Evaluations will be activated after verification.

The fields marked with * are required.

Customers also bought Customers also viewed
Customers also bought
Artikelbild Brake line stainless steel
BMW /6, /7 models up to 9/80
With dual disc brake
€91.50
Prices incl. VAT, plus shipping costs
Part no. 3432699s
NEW
3411705_1 Gasket Set
ATE brake caliper Ø 38mm
BMW R 75/6, R 90/6, R 90S
€39.95
Prices incl. VAT, plus shipping costs
Part no. 3411705
Artikelbild Rubber mounting
Battery box
BMW 2-valveBoxer models
€8.90
Prices incl. VAT, plus shipping costs
Part no. 6121028
Artikelbild Oilfilter Set
Mahle
BMW 2v Boxer models without oilcooler
OX37D two-piece
€14.95
Prices incl. VAT, plus shipping costs
Part no. 1142145
Artikelbild Brake pipe
BMW 2v Boxerr from 9/73 up to 9/80
Rigid Below Right
€28.60
Prices incl. VAT, plus shipping costs
Part no. 3432406
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 Valve cover gasket
BMW 2-valve Boxer models
€3.95
Prices incl. VAT, plus shipping costs
Part no. 1112426
Artikelbild Brake pads
Brembo
BMW /6, /7 models
Front
€49.95
Prices incl. VAT, plus shipping costs
Part no. 3411358L
Artikelbild Float
BING carburator 64/26, 64/28, 64/32, 94/40
BMW 2-valve Boxer models
€26.95
Prices incl. VAT, plus shipping costs
Part no. 1311766
Artikelbild Brake cable
BMW R 75/6, R 90/6, R 90S
€45.95
Prices incl. VAT, plus shipping costs
Part no. 3273400
Artikelbild O-ring seal brake pads
For ATE brake system Front
BMW /6, /7 models
€3.95
Prices incl. VAT, plus shipping costs
Part no. 3411120
NEW
3431924_1 Brake master cylinder 14mm Repair kit
BMW R 75/6, R 90/6 bs 9/1975
€109.00
Prices incl. VAT, plus shipping costs
Part no. 3431924
NEW
3431926_1 Repair kit Brake master cylinder 14mm
BMW /6, /7 models from 9/1975 on

€109.00
Prices incl. VAT, plus shipping costs
Part no. 3431926
NEW
3431927_1 Repair kit Brakemaster cylinder 17mm
BMW R 90S, R 60/7, R 75/7, R 80/7, R 100 models

€109.00
Prices incl. VAT, plus shipping costs
Part no. 3431927
Artikelbild Sticker R 65 battery cover
BMW R 65 models
€9.95
Prices incl. VAT, plus shipping costs
Part no. 4663098
Artikelbild Indicator unit
LED technology
BMW /6, /7 models up to 9/77

€189.00
Prices incl. VAT, plus shipping costs
Part no. 6211665
Artikelbild Breaker contact
With long wiring
BMW 2v Boxer models up to 9/78

€15.75
Prices incl. VAT, plus shipping costs
Part no. 1211555
Artikelbild Brake pipe
BMW 2v Boxer from 9/73 up to 9/80
Rigid Below Left
€28.60
Prices incl. VAT, plus shipping costs
Part no. 3432405
Artikelbild Spring
BMW /6, /7 models
For ATE brake caliper
€9.75
Prices incl. VAT, plus shipping costs
Part no. 3411513
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
4663174_1 Battery cover
Right side
BMW R 45, R 65
€39.50
Prices incl. VAT, plus shipping costs
Part no. 4663174
4663021_1 Battery cover
Right side
BMW /6 and /7 models
Right side
€39.90
Prices incl. VAT, plus shipping costs
Part no. 4663021
4663022_1 Battery cover
Left side
BMW /6 and /7 models

€39.90
Prices incl. VAT, plus shipping costs
Part no. 4663022
Artikelbild Brake pads
Lucas / TRW MCB 19
BMW 2V Boxer, 4V Boxer, K models
Front
€35.80
Prices incl. VAT, plus shipping costs
Part no. 3411724L
Artikelbild Oil pressure switch
BMW 2v Boxer models from /6 on
€12.95
Prices incl. VAT, plus shipping costs
Part no. 6131414
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 Fuel tap
Left side
BMW 2-valve Boxer models

€49.50
Prices incl. VAT, plus shipping costs
Part no. 1612113
Artikelbild Grip rubber
Right side Square-cut Black
BMW 2-valve Boxer models
€13.95
Prices incl. VAT, plus shipping costs
Part no. 3272812
Artikelbild Fork tube seal
BMW 2-valve Boxer models
€6.95
Prices incl. VAT, plus shipping costs
Part no. 3142001
Artikelbild Condenser
For breaker contact
BMW 2v Boxer models up to 9/78
€15.75
Prices incl. VAT, plus shipping costs
Part no. 1211564
Artikelbild Shaft seal
Transmission Input 5 speed
BMW 2-valve Boxer models

€9.95
Prices incl. VAT, plus shipping costs
Part no. 2312726
Artikelbild T-piece
For fuel hose 6mm
BMW 2-valve Boxer models
€9.95
Prices incl. VAT, plus shipping costs
Part no. 1311083
Artikelbild Repair kit brake master cylinder 14mm
BMW Monolever models
€78.30
Prices incl. VAT, plus shipping costs
Part no. 3272785R
Artikelbild Gasket Set
For Karcoma fuel tap
BMW 2-valve Boxer models

€12.95
Prices incl. VAT, plus shipping costs
Part no. 1612869
0758376_1 Silicone sealing compound
0.03 Liter (€521.67 / 1 Liter)
BMW 2V Boxer models
Drei Bond
Content 0.03 Liter (€521.67 * / 1 Liter)
€15.65
Prices incl. VAT, plus shipping costs
Part no. 0758376
Artikelbild Clutch installation Tool
BMW 2v models up to 9/80
€24.90
Prices incl. VAT, plus shipping costs
Part no. 8121026
Artikelbild Oilfilter Set
Mahle
BMW 2v Boxer models with oilcooler
OX36D two-piece
€15.90
Prices incl. VAT, plus shipping costs
Part no. 1142146
Artikelbild Seal for wheel bearing
BMW 2-valve Boxer models
€7.50
Prices incl. VAT, plus shipping costs
Part no. 3631836
Artikelbild Pushrod tube seal
BMW R 45 and R 65 models
€4.95
Prices incl. VAT, plus shipping costs
Part no. 1111090
Artikelbild Speedometer cable boot Gearbox input
BMW 2-valve Boxer models
€7.90
Prices incl. VAT, plus shipping costs
Part no. 6113170
Customers also viewed
NEW
3431926_1 Repair kit Brake master cylinder 14mm
BMW /6, /7 models from 9/1975 on

€109.00
Prices incl. VAT, plus shipping costs
Part no. 3431926
NEW
3431927_1 Repair kit Brakemaster cylinder 17mm
BMW R 90S, R 60/7, R 75/7, R 80/7, R 100 models

€109.00
Prices incl. VAT, plus shipping costs
Part no. 3431927
Artikelbild Gasket Set
For Karcoma fuel tap
BMW 2-valve Boxer models

€12.95
Prices incl. VAT, plus shipping costs
Part no. 1612869
NEW
3411197_1 Brake disc Paralever Left side
Floating
BMW R 80R and R 100R models
€237.00
Prices incl. VAT, plus shipping costs
Part no. 3411197
Artikelbild Repair kit brake master cylinder 16mm
BMW Boxer models from 9/80 up to 9/81
€78.30
Prices incl. VAT, plus shipping costs
Part no. 3272365R
Artikelbild Alternator rotor
New part
BMW 2-valve Boxer models

€129.00
Prices incl. VAT, plus shipping costs
Part no. 1231641
Artikelbild Brake line stainless steel
BMW /6, /7 models up to 9/80
With dual disc brake
€91.50
Prices incl. VAT, plus shipping costs
Part no. 3432699s
Artikelbild Brake disc 2-2 perforation
Deep shape Siebenrock product
BMW R 45, R 65, R 65GS, R 80G/S, R 80G/S PD, R 80ST

€219.00
Prices incl. VAT, plus shipping costs
Part no. 3411005
Artikelbild Choke cable
BMW R 90S
Left or right side
€19.50
Prices incl. VAT, plus shipping costs
Part no. 1323644
Artikelbild Final drive cover gasket
BMW 2-valve Boxer models
from 9/1980 on
€7.95
Prices incl. VAT, plus shipping costs
Part no. 3311097
13-11-1-262-399_1 Ccarburetor Dellorto
Left side
Original BMW new part
BMW R 90 S
€588.41
Prices incl. VAT, plus shipping costs
Part no. 13111262399
3432687S_1 Brake line stainless steel
320mm brake disc
BMW R 80GS, R 100GS, R 80GS Basic up to 9/90
€59.80
Prices incl. VAT, plus shipping costs
Part no. 3432687S
3432799S_1 Brake line stainless steel
320mm brake disc
BMW R 80GS, R 80GS PD, R 100GS, R 100GS PD from 9/87 up to 9/89
€59.80
Prices incl. VAT, plus shipping costs
Part no. 3432799S
1311973_1 Atomizer
BING carburettor 64/32, 94/40
BMW 2V Boxer models
€12.90
Prices incl. VAT, plus shipping costs
Part no. 1311973
1311838_1 Pre-atomizer
BING carburetor 64/26, 64/28
BMW R 45, R 65 models with 27hp
€12.95
Prices incl. VAT, plus shipping costs
Part no. 1311838
NEW
1372362_1 Intake rubber carburetor
D=62mm
BMW R 100 Paralever models

€17.90
Prices incl. VAT, plus shipping costs
Part no. 1372362
1311730_1 Atomizer
BING carburetor 1/26, 64/32
BMW R 50, R 60, R 75 models
€11.45
Prices incl. VAT, plus shipping costs
Part no. 1311730
NEW
3451100_1 Brake disc Rear Floating
For ABS
BMW K 1200LT, R 1200CL
€264.00
Prices incl. VAT, plus shipping costs
Part no. 3451100
NEW
3411198_1 Brake disc Mono / Para Right
Floating
BMW Paraleverr, Monolever with single disc
€237.00
Prices incl. VAT, plus shipping costs
Part no. 3411198
NEW
Artikelbild Starter Valeo 8 teeth
Overhauled In exchange
BMW R 50/5, R 60/5, R 75/5, R 60/6, R 75/6, R 90/6, R 90S

€259.00
Prices incl. VAT, plus shipping costs
Part no. 1241673
NEW
3421233_1 Brake master cylinder
Repair kit
BMW R 100 models
Rear
€109.00
Prices incl. VAT, plus shipping costs
Part no. 3421791
NEW
1122284_1 Crankshaft guide ring
BMW 2V Boxer models
€89.00
Prices incl. VAT, plus shipping costs
Part no. 1122284
11661002_1 Cylinder head Krauser
Left side
Krauser 4-valve / MKM

€0.00
Prices incl. VAT, plus shipping costs
Part no. 11661002
NEW
1812907S_1 Silencer Hoske Set
Black chrome
BMW R 45, R 65, R 65LS
35mm


€439.00
Prices incl. VAT, plus shipping costs
Part no. 1812907S
NEW
1812907_1 Silencer Hoske Set
Chrome
BMW R 45, R 65, R 65LS
35mm


€398.00
Prices incl. VAT, plus shipping costs
Part no. 1812907
1812909S_1 Silencer Hoske Set
Black chrome
BMW R100S, R 100RS, R 100RT
40mm


€439.00
Prices incl. VAT, plus shipping costs
Part no. 1812909S
1812909_1 Silencer Hoske Set
Chrome
BMW R100S, R 100RS, R 100RT
40mm


€398.00
Prices incl. VAT, plus shipping costs
Part no. 1812909
NEW
3421233_1 Brakemaster cylinder
Repair kit
BMW R 100 models
Rear
€44.95
Prices incl. VAT, plus shipping costs
Part no. 3421233
NEW
3431924_1 Brake master cylinder 14mm Repair kit
BMW R 75/6, R 90/6 bs 9/1975
€109.00
Prices incl. VAT, plus shipping costs
Part no. 3431924
NEW
1231107L_1 Alternator
BMW /6, /7 models
350W Lithium style battery compatible
€798.00
Prices incl. VAT, plus shipping costs
Part no. 1231107L
8122143_1 Adhesive Petec power gel
0.02 Kilogramm (€592.50 / 1 Kilogramm)
BMW 2v Boxer models
Content 0.02 Kilogramm (€592.50 * / 1 Kilogramm)
€11.85
Prices incl. VAT, plus shipping costs
Part no. 8122143
6211663S_1 Instrument housing Set
BMW R 60/6, R 75/6, R 90/6, R 90S
R 60/7, R 75/7, R 100 models
€198.00
Prices incl. VAT, plus shipping costs
Part no. 6211663S
1231106_1 Alternator
BMWR 60/6, R 75/6, R 90/6, R 90S
350W
€469.00
Prices incl. VAT, plus shipping costs
Part no. 1231106
Artikelbild Asymmetrical camshaft Kit
BMW R 45, R 65 models
€469.00
Prices incl. VAT, plus shipping costs
Part no. 1131180S
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 Swing Arm Boot
BMW 2-valve Boxer models
€21.95
Prices incl. VAT, plus shipping costs
Part no. 3317304
Artikelbild Valve Intake
34mm
BMW R 50/5
€29.95
Prices incl. VAT, plus shipping costs
Part no. 1134118
Artikelbild Oil Cooler Kit "Street"
BMW R 45, R 65, /7, Monolever models
Centered position
€495.00
Prices incl. VAT, plus shipping costs
Part no. 1142400S
Artikelbild Footrest rubber
Lowered driver footrest
BMW R 65GS, R 80G/S, R 80GS, R 100GS, R 100 Basic
€14.95
Prices incl. VAT, plus shipping costs
Part no. 4672019
Artikelbild Brembo brake caliper
Repair kit
BMW Monolever, Paralever models
48mm
€118.90
Prices incl. VAT, plus shipping costs
Part no. 3411187
Viewed