Dedicated Subsystem WorkbenchPlatform Gen: 2019–2026

2021 BMW S 1000 RR Charging System, Stator AC Output & Battery Health

Stator 3-phase AC voltage at 5,000 RPM, coil resistance, regulated DC voltage, battery code YTX9-BS, CCA rating, and multimeter charging diagnostic steps for 2021 BMW S 1000 RR.

Technical PassportOEM VERIFIED

Engine

999cc

Cooling

Liquid/Oil-Cooled

Final Drive

525 Chain

Engine Oil

3.50 L (3.70 US qt)

Spark Plug

NGK LMAR9AI-8

Front Tire

120/70ZR17

Gen 2019–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2019 through 2026.

SPECS-TO-CART BUNDLESFactory Direct-Fit Maintenance Bundles Available

1-Click verified Motul engine oil service kits, race filters, spark plugs, and brake fluid pre-measured for this 2021 BMW S 1000 RR.

Configure Service Bundles→

Select Model Year:(Active: 2021)
8 Production Years (2019–2026)

2019 2020 2021 2022 2023 2024 2025 2026

3-Phase Charging System & Battery Diagnostic Flowchart

Yuasa & OEM Standards

Multimeter troubleshooting protocols, cold cranking amps (CCA) ratings, 3-phase stator AC outputs, and regulator-rectifier health verification.

Shop YTX9-BS Batteries

OEM Battery Code

YTX9-BS (VRLA / AGM Maintenance-Free)

Cold Cranking Rating

135 CCA

Capacity (10HR Rate)

8 Ah (12V)

Regulated Output Spec

14.3 - 14.8 V DC

Key-OFF Parasitic Limit

< 1.5 mA (CAN-bus sleeping state)

Enter Multimeter DC Voltage Reading

V DC

Multimeter Test Diagnosis

Enter your multimeter terminal reading on the left to view instant diagnostic interpretations and recommended workshop actions.

OEM Factory AGM BatteryOEM Replacement

Yuasa YTX9-BS High Performance AGM Battery

Dimensions: 150 L × 87 W × 105 H mm • Weight: 6.6 lbs (3.0 kg). Pre-filled absorbed glass mat technology engineered for heavy vibration resistance.

Lithium LiFePO4 UpgradeUp to 70% Lighter

Antigravity ATX-12 Re-Start (360 CCA / 2.0 lbs)

Features built-in RE-START jump starting reserve. Never stranded by dead lights: press the restart button on the top terminal to crank the motorcycle without jumper cables.

Smart Maintainer SpecBattery Life Extension

12V AGM / Float 1.0A

Standard Charge Rate: 0.9A (Max 1.8A). Automated desulfation & float maintenance ensures full capacity retention during off-season winter storage.

Recommended Parts: Yuasa YTX9-BS High Performance AGM Battery • OptiMate 4 Quad Program 1.0A Smart Battery Tender / Charger

Shop Smart Battery Chargers Find Direct-Fit Batteries

IGNITION ENGINEERING, HEAT-RANGES & COMBUSTION DIAGNOSTICS

OEM Spark Plugs • Heat-Range Dissipation • Coil Resistance • Visual Combustion Reading Matrix

FACTORY CERTIFIED SPECIFICATIONS

Factory Standard Plug

NGK LMAR9D-J

4 Plugs (ShiftCam Inline-4)

Electrode Spark Gap

0.8 - 0.9 mm (0.031 - 0.035 in)

M10 x 1.0 • 26.5 mm Reach

Hex Drive & Socket Spec

14 mm Bi-Hex (Thin-Wall)

Use magnetic rubber-insert thin socket

Tightening Torque (NM)

12 N·m

1/2 turn after finger seat (gasket crush)

Stick Coil Resistances

Pri: 0.70 - 0.95 Ω at 20°C

Sec: 9.5 - 12.2 kΩ at 20°C

Service & Replacement

Inspect: 9,000 miles (15,000 km)

Replace: 18,000 miles (30,000 km)

SPARK PLUG HEAT-RANGE & METALLURGY SELECTOR

Compare OEM standard, fine-wire precious metals, and ambient/duty cycle thermal dissipation paths

Verified Part Specification

NGK LMAR9D-J

FACTORY SPECIFICATION

Metallurgy & Center Tip Architecture

Copper Core / Solid Nickel Alloy Ground Electrode

Thermal Dissipation Path & Physics

Standard OEM factory thermal dissipation rate. Calibrated to stabilize ceramic nose temperature between 500°C–800°C across mixed street, highway, and mountain riding.

Operating Application Envelope

Stock engines, factory ECU mapping, general commuting, and standard touring. Recommended for all baseline maintenance schedules.

Ignitability & Coil Voltage Demand

Standard spark kernel size. Standard secondary coil demand (~15–20 kV). Solid copper core ensures rapid heat conduction away from tip.

SPARK PLUG READING & COMBUSTION DIAGNOSTICS ANALYZER

Interactive visual diagnosis: Match your ceramic insulator tip and electrodes to detect AFR, timing, oil intrusion, and thermal overload

Normal Clean — Optimal Combustion Equilibrium

OPTIMAL COMBUSTION

Thermal Operating Range: 500°C – 800°C (932°F – 1,472°F) • Self-Cleaning Pyrolysis Window

Visual Insulator & Electrode Profile

Ceramic insulator nose is light grayish-tan, beige, or light brown. Firing tip and electrodes are dry with minimal combustion deposits. Ground electrode edges remain crisp without rounding or erosion.

Multimeter Electrical Resistance Test

Insulation Resistance > 10 MΩ (Infinite DC resistance between center terminal and steel shell). Dielectric barrier is pristine; zero spark leakage to cylinder head ground.

Probable Root Causes

Optimal air/fuel ratio across all throttle positions (stoichiometric 14.7:1 cruise, 12.8:1–13.2:1 power enrichment)
Correct spark plug heat range precisely matched to engine displacement and cooling efficiency
Ignition timing and coil dwell saturation within factory parameters
Healthy piston rings and valve guide seals with minimal oil blow-by

Prescribed Workshop Remediation Action

No mechanical intervention required. Inspect gap with wire-style feeler gauge and reinstall to factory torque specification.

Coil-on-Plug (COP) / Stick Coil Multimeter Bench Testing Protocol

Step 1 • Primary Circuit

Set DMM to lowest Ω range. Probe between Terminal 1 (+12V switched) and Terminal 2 (ECU trigger pin). Normal reading: 0.70 - 0.95 Ω at 20°C at 20°C.

Step 2 • Secondary Circuit

Set DMM to kΩ range. Probe between Terminal 1 and the high-voltage spark plug spring terminal inside the boot. Factory spec: 9.5 - 12.2 kΩ at 20°C at 20°C.

Step 3 • Dielectric Boot Inspection

Flex silicone boot under bright light. Check for pinholes, white powdery dielectric breakdown tracks, or hardened silicone causing high-voltage flashover to the cylinder head spark plug tube.

Direct-Fit Ignition Components & Workshop Sockets

Authentic laser iridium plugs, thin-wall magnetic sockets, and OEM replacement stick coils

Find Direct-Fit Spark Plugs (NGK LMAR9AI-8)

BMW Diagnostic Fault Codes & Multimeter Bench Testing

FI & OBD2 Decoder

Authentic factory ECU fault codes, sensor resistance specifications, and harness pinout troubleshooting.

Launch Full BMW DTC Engine→

Code P0105Manifold Absolute Pressure (MAP)

MAP sensor electrical circuit malfunction / range error.

Test: Verify 5.0V VRef and 2.5-3.0V signal key-on engine-off.

Code P0115Engine Coolant Temp (ECT)

ECT sensor circuit open, short, or out of plausible range.

Test: Measure NTC thermistor: ~2.5 kΩ at 20°C, 300 Ω at 80°C.

Code P0335Crankshaft Position Sensor (CKP)

CKP sensor electrical circuit or missing pulse teeth.

Test: Measure VR magnetic pickup coil resistance (typically 200-600 Ω).

Looking for other error codes, sensor pinouts, or OBD2/Euro 5 codes?

View All 68 Multi-Brand Diagnostic Trouble Codes →

Official NHTSA Safety Recalls & Technical Bulletins

1 Active Campaign

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

Verify VIN on NHTSA.gov

The U.S. National Highway Traffic Safety Administration reports 1 safety recall campaign associated with this platform. Independent repair shops and riders should confirm that authorized dealership warranty remedies have been applied.

NHTSA #22V752000POWER TRAIN:CLUTCH ASSEMBLY

Received: 07/10/2022▼

Defect Description

BMW of North America, LLC (BMW) is recalling certain 2022 S1000RR, M1000RR, and 2022-2023 S1000XR and S1000R motorcycles. The clutch cover bolts were not lubricated properly, which may cause the clutch cover to become loose and leak oil.

Safety Hazard / Consequence

An oil leak occurring at the clutch cover increases the risk of a crash or fire.

Factory Remedy & Repair Action

Dealers will replace all 10 clutch cover bolts, free of charge. Owner notification letters were mailed December 6, 2022. Owners may contact BMW customer service at 1-800-525-7417.

Manufacturer Notes: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

2 Documented Bulletins

Bulletin #BMW-22V752Safety Recall SIB 11 02 22: S 1000 RR & M 1000 RR 10-Bolt Clutch Cover Angle Torque

Source: BMW_Recall22V752_RCRIT-22V752-3349.pdf

Mandated Torques:Torque: Stage 1: 3 N·m (27 in·lb) (Clutch Cover Aluminum Screws - 10x Star Sequence)Torque: Stage 2: 90° Angle of Rotation (Clutch Cover Aluminum Screws - 10x Star Sequence)Torque: 28 N·m (21 lbf·ft) (Engine Oil Drain Plug - M16 x 1.5)Torque: 11 N·m (8 lbf·ft) (Oil Filter Cartridge)

Consumable Specs:Fresh 4-Stroke Engine Oil (Thread Lubricant Mandate)Oil Drain Plug Aluminum Crush Ring A16 x 21 (07 11 9 963 252)BMW Advantec Ultimate 5W-40 Synthetic Oil

Genuine Part Numbers:11 14 8 563 76311 14 8 405 53107 11 9 963 252

NHTSA Recall 22V-752SIB 11 02 22 / Campaign 0000112800

S 1000 RR / M 1000 RR 10-Bolt Clutch Cover Angle Torque

Mandatory single-use aluminum screw replacement, engine oil thread pre-lubrication, and 2-stage torque sequence (3 N·m + 90°).

Federal Safety RemedyStage 1: 3 N·m → Stage 2: 90°

Click any numbered bolt above for strict star-pattern order, oil thread lubrication rules, and aluminum bolt stretch physics.

Factory Tightening TorquesService Manual

Clutch Cover Aluminum Screws (10x) - Stage 13 N·m (27 in-lb)

Light initial snug in strict criss-cross star sequence

Clutch Cover Aluminum Screws (10x) - Stage 290° Angle of Rotation

Single smooth 90° angular turn using digital angle gauge or protractor

Engine Oil Drain Plug (M16 × 1.5)28 N·m (21 lb-ft)

Always install new aluminum crush ring (17 × 21 mm)

Oil Filter Cartridge11 N·m (8 lb-ft)

Lube O-ring seal with fresh Advantec Ultimate 5W-40

Clutch Cable Bracket Screw (M6)8 N·m (71 in-lb)

Verify free play of 0.5 – 1.0 mm at lever pivot

Bulletin #BMW-20V476Safety Recall SIB 34 03 21: R 1250 GS & S 1000 RR Front Brake Caliper Fluid Weepage Check

Source: BMW_Recall20V476_RCRIT-20V476-8248.pdf

Mandated Torques:Torque: 38 N·m (28 lbf·ft) (Front Radial Brake Caliper Mounting Bolts - 4x M10 x 65)Torque: 24 N·m (17.7 lbf·ft) (Brake Hose Union Banjo Bolt - New Sealing Washers)Torque: 10 N·m (7.4 lbf·ft) (Caliper Air Bleeder Valve)Torque: 19 N·m (14 lbf·ft) (Front Brake Rotor Torx Screws - 5x M8)

Consumable Specs:BMW Motorrad DOT 4 Brake Fluid (83 13 2 405 977)Genuine Sealing Washers A10 x 13.5 (07 11 9 963 072)Isopropyl Alcohol Contact Cleaner

Genuine Part Numbers:34 11 7 105 63734 11 7 105 63883 13 2 405 97707 11 9 963 072

NHTSA Recall 20V-476SIB 34 03 21 / SIB 34 02 21