Factory Workshop SpecificationsPlatform Gen: 2021–2026

2026 BMW R 18 / Classic / Bagger / Transcontinental Specifications & Consumables

Official workshop technical reference: fluid capacities, spark plug codes, drive chain specs, and tire inflation pressures.

Gen 2021–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2021 through 2026.

Select Model Year:(Active: 2026)

2021 2022 2023 2024 2025 2026

Engine

1802cc

Drive

Not Available

Cooling

Not Available

Engineering Subsystem Workbenches & Calculators

Dedicated deep-dive diagnostic tools, torque matrices, wiring pinouts, and calculators tailored for 2026 BMW R 18 / Classic / Bagger / Transcontinental.

10 Dedicated Engineering Spoke Pages

Subsystem Guide/torques

Fastener Torques

Engine drain plug, axle spindles, caliper mounts, triple clamp pinch bolts & thread lubrication derating guide.

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Subsystem Guide/fluids

Fluids & Capacities

Oil: 4.2 L (4.4 US qt) • Coolant: N/A • Brake: BMW Motorrad DOT 4

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Subsystem Guide/fuses-relays

Fuses & Relays

Main: N/A • Location: N/A

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Subsystem Guide/compression

Compression & Leakdown

Ratio: N/A

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Subsystem Guide/valves

Valve Clearances

Intake: N/A mm • Exhaust: N/A mm

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Subsystem Guide/fuel-delivery

Fuel Delivery & TB Sync

Idle: N/A • Rail Pressure: N/A • Vacuum: N/A

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Subsystem Guide/electrical

Charging & Battery

Battery: 12V / 26Ah AGM maintenance-free

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Subsystem Guide/tires

Tires & Gearing

Front: 120/70R19 (or 130/90B16) • Rear: 180/65B16

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Subsystem Guide/suspension

Suspension & Sag

Front Travel: N/A • Rear Travel: N/A

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Subsystem Guide/maintenance

Maintenance Schedule

Oil: N/A • Valves: N/A • Plugs: N/A

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Fluids & Service Capacities

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Engine Oil (Drain & Filter Change)4.2 L (4.4 US qt)

Engine Oil (Drain Only)N/A

Recommended Oil Viscosity15W-50

Coolant System CapacityN/A

Brake Fluid StandardBMW Motorrad DOT 4

Drivetrain, Chain & Gearing

Gearing Calculator →Shop Chains & Sprockets →

Drive Chain PitchN/A

Chain Link CountN/A

Front Sprocket TeethN/A

Rear Sprocket TeethN/A

Final Drive ConfigurationStandard

Ignition & Electrical Specifications

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OEM Spark Plug Part NumberNGK MAR8D-JDS (Dual ignition, 4 plugs)

Electrode Spark Plug GapNot Available

OEM Battery Reference Code12V / 26Ah AGM maintenance-free

Battery Output & RatingNot Available

Spark Plug Inspection IntervalN/A

Wheels, Tires & Inflation Pressures

Shop Tires →

Front Tire Dimensions120/70R19 (or 130/90B16)

Cold Front Inflation PressureN/A

Rear Tire Dimensions180/65B16

Cold Rear Inflation PressureN/A

OEM Wheel Rim Widths (F / R)3.50" / 5.50"

Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

No Active Federal Safety Recalls Reported

The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 2026 BMW R 18 / Classic / Bagger / Transcontinental platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.

OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

1 Documented Bulletin

Bulletin #BMW-24V716Safety Recall SIB 61 09 24: R 18 Big Boxer Reverse Gear Control Unit Waterproofing

Source: BMW_Recall24V716_RCRIT-24V716-8582.pdf

Mandated Torques:Torque: 56 N·m (41 lbf·ft) (Transmission Reverser Housing Screws - M10 Grade 10.9 with Loctite 243)Torque: 8 N·m (71 in·lb) (Reverser Control Module Screws - M6 x 25)Torque: 8 N·m (71 in·lb) (Battery Negative Ground Terminal Screw)Torque: 56 N·m (41 lbf·ft) (Right Footrest Bracket Mounting Bolts)

Consumable Specs:Loctite 243 Medium-Strength Threadlocker (83 19 2 210 339)Weatherproof Protective Connector Cap (61 13 8 384 550)

Genuine Part Numbers:07 12 9 908 52761 35 7 105 88961 13 8 384 550

NHTSA Recall 24V-716SIB 61 09 24 / Campaign 0000611900

BMW R 18 Big Boxer Reverse Gear Control Unit Assembly

Electric reverser control unit moisture sealing, connector deactivation protocol, and 56 N·m casing torque specifications.

Safety Recall RemedyCover 56 N·m / M6 8 N·m

Click any element above for AIR instruction 00 60 437 procedure, Grade 10.9 threadlock specs, and IP67 weather-capping.

Factory Tightening TorquesService Manual

Transmission Reverser Cover Screws (M10 × 1.5, Grade 10.9)56 N·m (41 lb-ft)

Replace screw or apply Loctite 243 medium threadlocker

Reverser Control Module Screws (M6 × 25)8 N·m (71 in-lb)

Fastens control unit to transmission rear face

Battery Negative Ground Lead Screw8 N·m (71 in-lb)

Disconnect negative ground terminal before servicing reverser wiring

Right Footrest Bracket Mounting Bolts (M10)56 N·m (41 lb-ft)

Cruiser footrest bracket to frame chassis

Exhaust Heat Shield Clamp Screws4.5 N·m (40 in-lb)

Stainless worm-drive band clamp

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