BMW R 100 S spare parts

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BMW R 100 S spare parts-sports boxer DNA for generations

As BMW 1976 Die R 100 s presented, she combined the iconic style of the R 90 S with a boxer enlarged to 980 cm³, 65 hp peak output and a revised chassis, the freeway and Alpine passes equally took confidently. Only four years of production (’76 -’80) make the model rare, but his modular technology and a living Spare parts network still enable faithful to the original today Restorations or subtle upgrades. This detailed overview explains all relevant BMW R 100 S spare parts - from Kolbenringen over Brake calipers to instrument seals - and delivers practical Tips so that your air-cooled sports airhead reliably, remains value -resistant and authentic.

1 | Historical classification - from the R 90 S to the R 100 S

The R 90 S (1973) founded BMW's comeback in the sports segment. Three years later, the displacement grew to 980 cm³ - the R 100 s received the new "Type 247/7" engine, but retained the characteristic bikini cladding, Dual instruments and the iconic two-color painting (Daytona Orange or Silver blue). The most important technical innovations included:

Oil cooling ribs on the engine block (5 ° C lower continuous temperature)

Increased oil pump (33 % more funding volume)

180 mm double spring coupling

ATE double disc 260 mm with swimming saddles

2 | Motor & intake-spare parts for boxer power

The 94 mm piston sits in Nikasil-coated cylinders, which, thanks to harder career, have to be sought less frequently. Storage sets and sealing kits are listed at BMW Classic by 2030.

Piston ring set Ø94 mm 11 25 1 337 149

Cylinder head-layer package 11 12 1 338 386

Valve guide set (bronze) 11 34 1 335 062

Bing 40 mm rebuild kit (Membrane, nozzles, O-rings) 13-103

The R 100 s Use 40 mm bing-CV carburetor With main nozzle #160, idle #45; Nadel nozzle 2.66. Every 30,000 km is recommended a complete rebuild to Minimize mixture fluctuations and smell of fuel.

3 | Cup & gear - switch gently instead of tough

The 180 mm dry clutch transmits up to 85 Nm - Reserves for tuning. Rattling in idle on worn friction slices or loose Rivet. Remedy:

  • Cup disk 21 21 2 303 798 (organic, asbestos -free)
  • Korb rivet Rebuild kit Heiden Tuning #HT-K180
  • Loan feather reinforced 21 21 21 1 232 332 - +15 % contact force

The M94 transmission is robust, but gear jumpers at 3./4. Gear arise when the switch roller and switching fork are worn out. Laser-ground replacement forks (Motorcycle Israel) offer 0.02 mm closer tolerance window And extend their lifespan by factor 2.

4 | Chassis & brakes - chassis spare parts for precision

The 38 mm stable (showa) has standard 175 mm travel; Progressive forkfedue replacement eliminated by Wilbers (5.5–7.5 N/mm) Brake through with hard.

Simmer rings 38 × 50 × 10.5 31 42 1 241 676

Gabelfeder kit Wilbers 601-0380-01

Brake disc 260 mm 34 11 1 234 056 (original)
or 320 mm Moto-Master-Wave + adapter

ATE swimming saddle rebuild Poetry 34 11 1 233 073

5 | Electrics & lighting - safe electricity on sports tour

Bosch light machine with 280 W covers series load Plus heating handles. Reduce LED lamps Total consumption by 30 W - reserve for navigation system or seat heating.

  • Lima-Rotor 12 31 1 243 195 Change with undervoltage
  • Regular upgrade MOSFET FH020AA Plug-and-play adapter available
  • Main corner LED H4 (Lumileds 3 200 lm), 30 W instead of 55 W
  • Contactless ignition box Alpha signing (Israel engines)-adjustable curves

6 | Maintenance plan-rhythm for long boxer life

  • Oil + filter - 7,500 km / 1 year
  • Set valves - 10,000 km
  • Spark plugs W7DC - 10,000 km
  • Clean the air filter - 15,000 km
  • Gearbox, axle oil - 15,000 km
  • Steering head & swinging camps - 25,000 km fat
  • Brake fluid dot 4 - 2 years

7 | Tuning & upgrade packages-more torque, less weight

  • Siebenrock 1 070 cm³ kit +10 % torque, identical outdoor look, TÜV-compliant
  • Öhlins Stx 36 twin shocks Tension level + preload externally, -1 kg unpr.
  • 320 mm Moto-Master Wave +18 % braking performance with Brembo P4-30/34-saddle
  • Titan-exhaust Keihan 3.2 kg lighter, 1 dB quieter, ABE available
  • Li-ion-Akku 8 Ah 4 kg savings, higher cold start performance

8 | Spare parts supply - OEM, Heritage & Scene

BMW Classic lists core components (crankshaft bearing shells, Cylinder head density rates, clutch, brake discs) in the long term. Aftermarket specialists: Siebenrock (Big bore, power kits), Motors Israel (Alpha signing, gear), Boxer supplies (Stainless steel systems) and Silent hustle and bustle (Ignition). Community marketplaces (2-ventiler.de, ibmwr.org) offer NOS covering panes, instrument rings and original Daytona-orange decorative strips.

9 | Replacement - documented spare parts as price drivers

Loud Classic car market price mirror 2025 lies a matching number r 100 s in "Daytona Orange" with the original exhaust and service booklet at 11,000 - 13,000 €. Demonstrably built OEM BMW R 100 S spare parts (Coupling, ATE saddle, 40 mm bing) increase the value by 10 %. Conversion without retrofitting parts have to count on discounts.

10 | Conclusion-original parts protect the sports airhead myth

The BMW R 100 S Mark the Highlight of classic boxer sports. Regular maintenance, careful spare parts selection and make it verifiable history Your two -valve not only a driving pleasure, but one Safe love affair with long-term value. Set consistently BMW original or Checked high quality aftermarket parts, and your 65-hp-airhead becomes for more decades with Sonors boxer bass the curves Set the world.

With a tested BMW R 100 S spare parts Experience them Golden era of boxer athletes in full authenticity-day by day.