Dedicated Subsystem WorkbenchPlatform Gen: 2014–2026

2015 Honda Grom (MSX125) Valve Clearance Specs & Shim Calculator

Cold valve clearance specs for 2015 Honda Grom (MSX125): intake mm, exhaust mm, inspection intervals and replacement shim calculator.

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.

Select Model Year:(Active: 2015)

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

Engine

124cc

Drive

420

Cooling

Air-Cooled

Factory Valve Clearance & Shim Calculator

OEM Workshop Tolerances

Cylinder head valve lash specifications, timing TDC mark alignments, and interactive replacement shim calculation engine.

Adjustment Mechanism: N/A (Screw & Locknut Tappet)

Active Valve Range (INTAKE)

0.08 - 0.12 mm

0.003 - 0.005 in

Nominal Mid-Spec Target

0.10 mm

Ideal cold lash assembly setting

Shim Diameter / Tappet

N/A (Screw & Locknut Tappet)

Tappet screw & locknut

Measurement Condition

Cold Engine (≤ 35°C / 95°F)

TDC compression stroke only

Direct Screw & Locknut Tappet System (Zero Shims Required)

This motorcycle utilizes mechanical rocker-arm screw and locknut adjusters. Replacement shims are not used on this cylinder head. Adjust clearances directly with feeler gauges, a 9mm tappet locknut wrench, and a 3mm square-drive tappet adjuster tool.

Feeler Gauge & Tool Spec

Straight blade feeler gauge, 9mm tappet wrench & 3mm square valve adjuster

Timing Alignment Mark

Align 'T' mark on flywheel with index mark on left crankcase cover inspection window

Locknut Torque Specification

Adjustable via square-drive screw & 9mm locknut (Torque locknut to 9 N·m)

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 2015 Honda Grom (MSX125) platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.