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Big Bore Kit 1070cc Touring

BMW R 100 models from 9/80 on
Conrods 150,5mm

Artikelbild
€2,695.00

Prices incl. VAT, plus shipping costs

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

  • 1101110
Plug & Play Kit. Siebenrock Big Bore Kit – The Original: Powerful, uncompromising, and... more
Big Bore Kit 1070cc Touring
Plug & Play Kit.

Siebenrock Big Bore Kit – The Original: Powerful, uncompromising, and time-tested.
Back in 2004, Siebenrock presented its groundbreaking 1070 cc Big Bore Kit to the public for the first time at the Intermot trade show. The innovative design – featuring a short, weight-optimized piston paired with a forged H-beam connecting rod measuring approximately 151 mm in length – was a technical highlight. The extended rod geometry ensures that the piston remains entirely within the cylinder bore, eliminating intrusion into the crankcase. This clever engineering concept received immediate acclaim and has since inspired numerous imitators.
More than two decades later, the Siebenrock BBK 1070, now equipped with the renowned asymmetric camshaft, continues to rank among the most powerful, reliable, and refined plug & play upgrade solutions for classic BMW 2-valve boxer engines. Delivering over 100 Nm of torque, it represents the perfect union of technical sophistication, German-made quality, and a genuine passion for engineering.

No matter which one you choose - you`ll have lots of fun. Guranteed!

1070 ccm dispacement, 80 PS approx. and giant torues between 90 and 116 Nm argue for themselves.

In addiion to our standard kit, that is established over the years we now have the "Touring" variant equipped with slightly shorter con-rods, for those who look for a powerful smooth riding performance and a plus of torque in the loer revvs.


This ultimate Big Bore Kit for tourers and long-distance travrellers deliveres powerful torque "off the cuff". It persuades in every situation with a quiet engine running and tolerates a bad quality fuel down to 95 octane approx. without knocking.

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

The scope of delivery includes all parts relevant for the assembly of the set:

2 cylinders with pistons
Piston rings
Connecting rod with ARP screws
Asymmetric camshaft
Gasket set camshaft
Gasket set cylinder
Socket for connecting rod screws.

Conrod bearing shel,
Art.No. 1124419
Art.No. 1124420
Art.No. 1124460
Art.No. 1124461
must be ordered seperately!

With MOT/TÜV approval and installation instruction.
Price for the set.

For the classic BMW 2-valve Boxer models
R 100, R 100CS, R 100RS, R 100RT
Monolever models R 100RS (x), R 100RT (x)
Paralever models R 100GS (x), R 100R (x).

(x) = only permitted for vehicles up to 31.3.1994.

TIP
The use of dual ignition is strongly recommended.
Ready-to-install camshaft including camshaft gear and front camshaft bearing on request.
Fits for BMW R2V: R 100 up to 84, R 100 RS/RT Mono from 87 on, R 100GS 87-96, R 100R 91-95
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Artikelbild Bearing shell conrod
BMW 2v Boxer models
Standard sized
€12.50
Prices incl. VAT, plus shipping costs
Part no. 1124460
1311974_1 Main jet 155
BING Carburetor 64/32 /94/40
BMW 2V Boxer models
€10.95
Prices incl. VAT, plus shipping costs
Part no. 1311974
1311522_1 Nozzle needle
BING carburetor 94/40
BMW R 100 Paralever
€11.40
Prices incl. VAT, plus shipping costs
Part no. 1311522
1311321_1 Nozzle needle
BING carburetor 94/40
BMW R 80, R 100 models
€11.40
Prices incl. VAT, plus shipping costs
Part no. 1311321
NEW
3431960_1 Rear brake master cylinder
BMW R 100 models
Rear
€389.00
Prices incl. VAT, plus shipping costs
Part no. 3431960
4654203_1 Leather Bag "Classic"
R 50, R 50S, R 50/2, R 60, R 60/2, R 69, R 69S
€319.00
Prices incl. VAT, plus shipping costs
Part no. 4654203
1212000_1 Distance ring
For spark plug
BMW R 100 models
€4.95
Prices incl. VAT, plus shipping costs
Part no. 1212000
Artikelbild Star Nut Wrench
Touring
BMW 2-valve Boxer models
Short For the journey
€42.90
Prices incl. VAT, plus shipping costs
Part no. 1821698
Artikelbild Oil pan distance ring
Black
BMW 2-valve Boxer models
€169.00
Prices incl. VAT, plus shipping costs
Part no. 1113100S
Artikelbild Repair kit brake master cylinder 20mm
BMW 4V Boxer and K 4V models
€64.50
Prices incl. VAT, plus shipping costs
Part no. 3272140R
Artikelbild Alternator rotor
Overhauled In exchange
BMW 2-valve Boxer models

€129.00
Prices incl. VAT, plus shipping costs
Part no. 1231642
Artikelbild Rubber mounts
Diode plate
BMW 2-valve Boxer models

€3.95
Prices incl. VAT, plus shipping costs
Part no. 1231131
Artikelbild Double ignition
Silent Hektik
BMW 2v Boxer models from 9/78 on

€599.00
Prices incl. VAT, plus shipping costs
Part no. 1200100
Artikelbild Sticker R 80G/S battery cover
BMW R 80G/S
€9.40
Prices incl. VAT, plus shipping costs
Part no. 5114498
Artikelbild Diode board
BMW 2v Boxer models
€79.90
Prices incl. VAT, plus shipping costs
Part no. 1231062
Artikelbild Instrument housing Rubber ring
BMW 2v Boxer models
€12.95
Prices incl. VAT, plus shipping costs
Part no. 6211676
Artikelbild Power Kit Extra 1000cc 99mm
Stainless steel pushrod tubes
BMW R 75/6, R 90/6, R 90S, R 75/7, R 80/7, R 80RT

€1,179.00
Prices incl. VAT, plus shipping costs
Part no. 1100085
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 Crankshaft seal
BMW 2v Boxer models
Front
€6.50
Prices incl. VAT, plus shipping costs
Part no. 1114011
Artikelbild Oil suction pipe joint
BMW 2V Boxer models
€1.90
Prices incl. VAT, plus shipping costs
Part no. 1141258
Artikelbild Steering head bearing
BMW 2V Boxer, K 2V, K 4V, F models
€21.90
Prices incl. VAT, plus shipping costs
Part no. 0711070
Artikelbild Seat Bracket
Rear bolts
BMW Paralever models
€10.95
Prices incl. VAT, plus shipping costs
Part no. 5255210
Artikelbild Big Bore Kit 1070cc
BMW R 100 models from 9/80 on
Conrods 151,0 mm
€2,595.00
Prices incl. VAT, plus shipping costs
Part no. 1101100
NEW
1101210_1 Big Bore Kit 1070cc "S" Touring
Conrods 150,5mm
€2,695.00
Prices incl. VAT, plus shipping costs
Part no. 1101210
NEW
1101200_1 Big Bore Kit 1070cc "S"
Conrods 151,0 mm
€2,595.00
Prices incl. VAT, plus shipping costs
Part no. 1101200
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
€1,159.00
Prices incl. VAT, plus shipping costs
Part no. 1100103
Artikelbild Power Kit Extra 1000cc
Stainless steel push rod tubes
BMW R 80, R 80RT, R 80G/S, R 80ST, R 80GS, R 80R
€1,159.00
Prices incl. VAT, plus shipping costs
Part no. 1100082
11661002_1 Cylinder head Krauser
Left side
Krauser 4-valve / MKM

€0.00
Prices incl. VAT, plus shipping costs
Part no. 11661002
Artikelbild Power Kit 1000cc
Plug & Play
BMW R 80, R 80RT, R 80G/S, R 80ST, R 80GS, R 80R
€1,069.00
Prices incl. VAT, plus shipping costs
Part no. 1100080
Artikelbild Replacement Kit 1000cc
Plug & Play
BMW R 100, R 100CS, R 100RS, R 100RT, R 100GS, R 100R
From 9/1980 on
€1,069.00
Prices incl. VAT, plus shipping costs
Part no. 1100100
NEW
1100065_1 Power Kit Extra 1000cc 99mm
Plug & Play
BMW R 60/6 from 9/1975 on, R 60/7
€1,179.00
Prices incl. VAT, plus shipping costs
Part no. 1100065
Artikelbild Double ignition
Silent Hektik
BMW 2v Boxer models from 9/78 on

€599.00
Prices incl. VAT, plus shipping costs
Part no. 1200100
Artikelbild Bearing shell conrod
BMW 2v Boxer models
Standard sized
€12.50
Prices incl. VAT, plus shipping costs
Part no. 1124460
NEW
1113080_1 Siebenrock FM Oil pan
BMW 2-valve Boxer models
Basic
€685.00
Prices incl. VAT, plus shipping costs
Part no. 1113080
Artikelbild Power Kit 860cc
Plug & Play
BMW R 45 from 9/80, R 65GS, R 65 Monolever 27hp
€1,079.00
Prices incl. VAT, plus shipping costs
Part no. 1100860
NEW
1100062_1 Power Kit Extra 1000cc 97mm
Plug & Play
BMW R 60/5 , R 60/6 up to 9/1975
€1,179.00
Prices incl. VAT, plus shipping costs
Part no. 1100062
Artikelbild Replacement Kit Extra 1000cc
99mm Plug & Play
BMW R 100/7, R 100S, R 100RS, R 100RT
Up to 9/1980
€1,179.00
Prices incl. VAT, plus shipping costs
Part no. 1100105
Artikelbild Double ignition Kit
BMW 2V Boxer models from 9/78 on
SDZ
€599.00
Prices incl. VAT, plus shipping costs
Part no. 1200150
NEW
1109210_1 Cylinder "S"
Big Bore Kit "S"
98mm
€459.00
Prices incl. VAT, plus shipping costs
Part no. 1109210
Artikelbild Oil pan distance ring
BMW 2-valve Boxer models
€139.00
Prices incl. VAT, plus shipping costs
Part no. 1113100
Artikelbild Asymmetrical camshaft
BMW 2v Boxer models from 9/78 on
€329.00
Prices incl. VAT, plus shipping costs
Part no. 1131800
Artikelbild Power Kit Extra 1000cc 97mm
Plug & Play
BMW R 75/5, R 75/6, R 90/6 , R 90S up to 9/7
€1,179.00
Prices incl. VAT, plus shipping costs
Part no. 1100072
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
NEW
1113093_1 Siebenrock FM Oil pan
BMW 2-valve Boxer models
Black Logo and fins polished
€879.00
Prices incl. VAT, plus shipping costs
Part no. 1113093
NEW
Artikelbild Bearing shell connecting rod
+0,25 1.Oversize
BMW 2V Boxer models
€12.50
Prices incl. VAT, plus shipping costs
Part no. 1124419
Artikelbild Replacement Kit 1000cc 99mm
Plug & Play
BMW R 100/7, R 100RS, R 100RT
Up to 9/1980
€1,189.00
Prices incl. VAT, plus shipping costs
Part no. 1100104
Artikelbild Power Kit Extra 1000cc 99mm
Stainless steel pushrod tubes
BMW R 75/6, R 90/6, R 90S, R 75/7, R 80/7, R 80RT

€1,179.00
Prices incl. VAT, plus shipping costs
Part no. 1100085
NEW
1109222_1 Piston "S"
Big Bore Kit "S"
BMW R 100 models
98mm complete with 3 rings
€399.00
Prices incl. VAT, plus shipping costs
Part no. 1109222
Artikelbild Camshaft asymmetric
BMW R 45, R 65 models
€329.00
Prices incl. VAT, plus shipping costs
Part no. 1131180
1112261S40_1 Valve Cover Bundle
40 Years of Siebenrock
Anniversary Offer
BMW 2v Boxer models
€111.00
Prices incl. VAT, plus shipping costs
Part no. 1112261S40
NEW
1113087_1 Siebenrock FM Oil pan
BMW 2-valve Boxer models
Individual
€769.00
Prices incl. VAT, plus shipping costs
Part no. 1113087
1812908_1 Silencer Hoske Set
Chrome
BMW /5, /6, /7 models
38mm


€398.00
Prices incl. VAT, plus shipping costs
Part no. 1812908
Artikelbild Valve cover Classic
BMW 2-valve Boxer models
€49.75
Prices incl. VAT, plus shipping costs
Part no. 1112240
BMW R 80ST BMW R 80ST
€4,900.00
NEW
Artikelbild Bearing shell conrod
+0,02 Standard sized
BMW 2V Boxer models
€12.50
Prices incl. VAT, plus shipping costs
Part no. 1124461
Artikelbild Oil pan distance ring
Black
BMW 2-valve Boxer models
€169.00
Prices incl. VAT, plus shipping costs
Part no. 1113100S
Artikelbild Power Kit 860cc
Plug & Play
BMW R 45 up to 9/80
€1,096.00
Prices incl. VAT, plus shipping costs
Part no. 1100861
Artikelbild Oil cooler Kit
BMW 2v Boxer models
Centered position
€469.00
Prices incl. VAT, plus shipping costs
Part no. 1142400
Artikelbild Piston
Big Bore Kit "MAHLE"
BMW R 100 models
98mm complete with 3 rings
€399.00
Prices incl. VAT, plus shipping costs
Part no. 1109022
Artikelbild "Krauser Classic" Motocase
Set
BMW 2-valve Boxer models
Improved new edition
€659.00
Prices incl. VAT, plus shipping costs
Part no. 4654100
NEW
Artikelbild Bearing shell connecting rod
+0,50 2.Oversize
BMW 2V Boxer models
€12.50
Prices incl. VAT, plus shipping costs
Part no. 1124420
1109015_1 Piston ring Tension belt
For Power Kit, Replacement Kit and Big Bore Kit pistons
€27.95
Prices incl. VAT, plus shipping costs
Part no. 1109015
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