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Honda MSX 125 Grom

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Make Model

Honda MSX 125 Grom

Year

2025

Engine

Four stroke, single cylinder, SOHC, 2 valve

Capacity

124.9 cc / 7.62 cu-in
Bore x Stroke 50.0 x 63.1 mm
Compression Ratio 10.0:1
Cooling System Air cooled

Induction

Injection PGM-FI

Ignition 

Electronic CDI 
Starting Electric

Max Power

9.6 hp / 7.2 kW @ 7250 rpm

Max Torque

10.5 Nm / 7.7 lb-ft @ 5500 rpm
Clutch Wet multiplate

Transmission

5 Speed
Final Drive Chain
Frame Steel mono-backbone frame

Front Suspension

31mm USD forks

Rear Suspension

Mono shock, steel square pipe swingarm

Front Brakes

Single 220mm disc with hydraulic dual-piston brake caliper

Rear Brakes

Single 190mm disc with hydraulic single-piston brake caliper
Wheels 5 Spoke Aluminium Cast
Front Rim MT 2.5-12
Rear Rim MT 2.5-12

Front Tyre

120/70-12

Rear Tyre

130/70-12
Rake 25.0°
Trail 81 mm / 3.2 in
Dimensions Length 1760 mm / 69.2 in
Width    720 mm / 28.3 in
Height 1015 mm / 39.9 in
Wheelbase 1200 mm / 47.2 in
Seat Height 761 mm / 29.9 in
Ground Clearance 180 mm / 7.0 in

Wet Weight

103 kg / 227 lbs

Fuel Capacity

6 Litres / 1.58 US gal
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From a press release issued by Honda:

Easy to use, fun and functional, the original leisure motorcycle was defined by Honda in 1963 with the iconic, small-wheeled Monkey bike. Its spirit carried on and has been reimagined for each respective generation, most recently with the 13YM MSX125, the reborn 18YM Monkey and the 22YM DAX.
And in the 21st century the formula has found resonance with the new breed of young riders. Known as ‘Dek Neaw’ in Thailand and ‘Street-Kei’ in Japan, they have grown up in the borderless internet age, and share a culture, outlook and spirit that defies convention.

1. Introduction

Instinctively drawn to motorcycling, they need their first two-wheeled transport to be exciting but not unduly challenging, with a design that sets them apart and a reasonable price tag. In 13YM Honda introduced the MSX125 (Mini Street X-treme 125) to cater specifically for such young riders.
Always known as the ‘Grom’ in Japan and USA, the MSX125 added that same title its European name for 21YM. A truly global product, the Grom has been a hit across the world since its introduction and has established itself as a firm favourite, whether used for simple urban transport or as a heavily customised style statement by its target market.
21YM saw the Grom gain a new, retro style direction and 5-speed gearbox, improving top speed. The 25YM, while mechanically unchanged, sees the MSX125 Grom roll out with redesigned body work, new paint options and a host of genuine Honda accessories. As ever, it is the little bike that dreams big.

2. Model Overview
Replacing the retro style of the previous design, is a new, sportier look. The sharply-defined fuel tank cover features knee cutouts, and flows neatly into restyled side panels whilst a new sporty undercowl completes the visual enhancement. Equipment level is high: the LCD dash includes rev-counter and gear position indicator while the headlight is LED.

The Grom’s 125cc, SOHC 2-valve air-cooled engine maintains usable, real-world performance and drives through a 5-speed gearbox for more relaxed long-range riding. The tried and tested chassis continues to employ 31mm USD forks and 12-inch wheels to offer small-bike dimensions with big-bike suspension control and handling qualities. IMU-controlled disc braking provides an extra layer of riding confidence.

The 24YM MSX125 Grom will be available in the following colour options:
Candy Blue
Pearl White
Matte Black Metallic

3. Key Features
3.1 Styling & Equipment

New bodywork with inimitable individuality

Easy custom potential
LCD dash includes rev counter and gear position indicator
Pared down, with a more mass-forward stance and knee cut outs, the MSX125 Grom’s fuel tank covers have a newfound, more aggressive attitude echoed by the restyled side panels and new sporting undercowl, complemented by the sleek LED headlight, minimal seat unit and subframe.
And, influenced by customers’ ongoing efforts to make their bike unique, the MSX125 Grom is designed around the concept of adaptability and easy customisation. The bodywork remains easy to detach, and also offers much more surface area for an owner to express individuality with the application of stickers, graphics or wraps. The new Grom logo takes pride of place up front.
The gold finish to the USD front forks stands out in bright contrast to the blacked-out engine, exhaust, wheels and swingarm. Easy to read for its compact size, the LCD digital dash includes a rev-counter and gear position indicator, alongside the speedometer, twin trip meters, fuel gauge and clock. Resetting of the trip meters and clock, or alternation between odometer and trip meter, is managed by the switches either side of the display.

3.2 Engine
125cc, air-cooled fuel-injected two-valve engine
7.2kW peak power/10.5Nm torque and 66.6km/l (WMTC mode)
Five-speed gearbox for high-speed cruising
The 125cc, two-valve air-cooled engine uses a 50mm bore and 63.1mm stroke, with a compression ratio of 10.0:1. Peak power of 7.2kW arrives at 7,250rpm, with peak torque of 10.5Nm at 5,500rpm.