Factory Workshop SpecificationsPlatform Gen: 2014–2026

2023 Honda Grom (MSX125) Specifications & Consumables

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

Technical PassportOEM VERIFIED

Engine

124cc

Cooling

Air-Cooled

Final Drive

420 Chain

Engine Oil

0.90 L (0.95 US qt)

Spark Plug

NGK CPR6EA-9

Front Tire

120/70-12

Gen 2014–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2014 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 2023 Honda Grom (MSX125).

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Select Model Year:(Active: 2023)
13 Production Years (2014–2026)

2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Engineering Subsystem Workbenches & Calculators

Dedicated deep-dive diagnostic tools, torque matrices, wiring pinouts, and calculators tailored for 2023 Honda Grom (MSX125).

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: 0.90 L (0.95 US qt) • Coolant: N/A (Air-Cooled) • Brake: DOT 4

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Subsystem Guide/fuses-relays

Fuses & Relays

Main: 30A Blade / Starter Magnetic Switch • Location: N/A

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Subsystem Guide/compression

Compression & Leakdown

Ratio: 10.0:1 • Std: 145-185 PSI • Limit: 120 PSI

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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: YTZ5S • CCA: 65 • Regulated: 14.0 - 14.8 V DC

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Subsystem Guide/tires

Tires & Gearing

Front: 120/70-12 • Rear: 130/70-12

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Subsystem Guide/suspension

Suspension & Sag

Front Travel: 100 mm • Rear Travel: 103 mm

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Subsystem Guide/maintenance

Maintenance Schedule

Oil: Every 2,500 miles (4,000 km) mi • Valves: N/A • Plugs: Every 5,000 miles (8,000 km) mi

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Fluids & Service Capacities

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Engine Oil (Drain & Filter Change)0.90 L (0.95 US qt)

Engine Oil (Drain Only)0.80 L (0.85 US qt)

Recommended Oil ViscosityPro Honda GN4 10W-30 or 10W-40, JASO MA

Coolant System CapacityN/A (Air-Cooled)

Brake Fluid StandardDOT 4

Drivetrain, Chain & Gearing

Gearing Calculator →Shop Chains & Sprockets →

Drive Chain Pitch420

Chain Link Count106 Links

Front Sprocket Teeth15T

Rear Sprocket Teeth38T

Final Drive Configuration420 Pitch Chain

Ignition & Electrical Specifications

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OEM Spark Plug Part NumberNGK CPR6EA-9

Electrode Spark Plug Gap0.8 - 0.9 mm (0.031 - 0.035 in)

OEM Battery Reference CodeYTZ5S

Battery Output & Rating12V 3.5Ah 65 CCA

Spark Plug Inspection Interval5,000 miles (8,000 km) miles

Wheels, Tires & Inflation Pressures

Matched 2-Tire Sets →

Front Tire Dimensions120/70-12

Cold Front Inflation Pressure29 PSI (Cold)

Rear Tire Dimensions130/70-12

Cold Rear Inflation Pressure29 PSI (Cold)

OEM Wheel Rim Widths (F / R)3.50" / 4.50"

Verified OEM Wheel Fitment: 120/70-12 (F) + 130/70-12 (R)

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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 2023 Honda Grom (MSX125) 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 #HON-16V661Safety Recall KC4 (MTB 15216): Grom (MSX125) Fuel Pump Replacement & ECM Initialization

Source: Honda_Grom_Recall16V661_8528.pdf

Mandated Torques:Torque: 12 N·m (1.2 kg-m, 9 lbf·ft) (Fuel Pump Base Flange Nuts - Crisscross 2-3 Stages)Torque: 10 N·m (7 lbf·ft) (Fuel Tank Shroud Screws)

Consumable Specs:Genuine Fuel Pump Gasket 17572-GGL-J00Genuine Dust Seal 17518-GGL-J00SCS Short Connector 070PZ-ZY30100 for ECM Reset

Genuine Part Numbers:06160-K26-31617572-GGL-J0017518-GGL-J00

HONDA GROM 125 FUEL SYSTEMExploded View: In-Tank Fuel Pump & ECM Calibration (Safety Recall 16V-661 / KC4)

KIT # 06160-K26-316NHTSA 16V-661

Remedy Fuel Pump Assembly (Green Paint Mark)

Genuine Kit # 06160-K26-316 (Supersedes 06160-K26-306)

Base Nuts: 12 N·m (1.2 kg-m, 9 lbf·ft) Crisscross

CRITICAL SAFETY & EMISSIONS RECALL (Recall 16V-661 / Service Bulletin Grom125 #1 / KC4). Replaces defective fuel pump prone to resin impeller swelling and pump seizure. COUNTERMEASURE IDENTIFICATION: Verified by a green paint mark on the top of the pump housing and a black cap cover. DO NOT USE old recall kit 06160-K26-306.

1-Click Factory Service KitOEM Spec Fluid Capacities Matched

Workshop Maintenance Kit & Factory Fluids

Authentic factory-grade motor oil, oil filter, and high-temp brake fluid matched precisely to 2023 Honda Grom (MSX125) capacities.

Full Kit Subtotal

$74.50

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

Explore interactive 1-click oil change packs, brake flush kits & major tune-up bundles pre-measured for this 2023 Honda Grom (MSX125).

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10W-40 JASO MA2

Silkolene Pro 4 4T Synthetic Oil 10W-40 (4 Liter)

4-Liter Factory Full Jug

Matches factory 10W-40 spec (Oil spec: 0.90 L (0.95 US qt))

Item Price

$68.95

DOT 4 Synthetic Formula

EBC High-Performance DOT 4 Synthetic Brake Fluid

8.8 oz (250 ml) Workshop Bottle

Meets & exceeds factory DOT 4 specifications

Item Price

$5.55

Factory OEM Spark Plug Spec

NGK CPR6EA-9

Gap: 0.8 - 0.9 mm (0.031 - 0.035 in)

Inspection milestone: 5,000 miles (8,000 km) miles. Exact factory part specification.

Authentic OEM Reference

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Complete Workshop Maintenance Package3 Essential Service Items

Includes 10W-40 JASO MA2 engine oil (4-Liter Factory Full Jug), high-flow filter & DOT 4 fluid.

Kit Total

$74.50

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