Honda MSX125 / Grom 125 2013-2020 Stainless & Carbon-Style Full Exhaust System
Complete aftermarket full exhaust system for the Honda MSX125 / Grom application listed below. Designed as a replacement or styling/performance upgrade for the original exhaust, combining a stainless-steel pipe assembly with a compact carbon-style rear silencer.
Components Identified From the Product Photos
- Stainless-steel exhaust header / downpipe with cylinder-head mounting flange
- Stainless link / connecting pipe section forming the full system from the engine to the silencer
- Carbon-style performance silencer / muffler with metal end sections
- Silencer mounting bracket / strap arrangement as shown
- Spring-retained exhaust joints / mounting hardware where shown in the supplied photo set
Supplied as pictured. Please use the product photographs as the final reference for the exact brackets, springs and small hardware included.
Fitment
Honda MSX125 / Grom 125 family – pre-2021 models. Use the generation-specific listings above for the clearest OE comparison.
Fitment note: Generic search listing covering the pre-2021 MSX125/Grom family. Honda used different original exhaust assemblies across the model run, so compare the supplied aftermarket system with your bike before fitting.
Key Features
- Full system from cylinder head to rear silencer
- Stainless-steel pipework
- Carbon-style silencer finish
- Aftermarket replacement / upgrade
- Compact low-level performance appearance
- Moto Mania SKU: 01629-EXT
Honda OE / Manufacturer Cross-References
The supplied exhaust is an unbranded aftermarket system. The genuine Honda numbers below are included only to help identify the original exhaust family and mounting arrangement. They are not the manufacturer MPN of this Moto Mania exhaust.
- 18310-K26-902 / 18320-K26-901 – pre-SF Honda muffler / exhaust-pipe comparison references
- 18300-K26-B00 – 2017-generation Honda muffler comparison reference
- 18300-K26-C00 – 2020-generation Honda muffler comparison reference
- 18291-GE2-920 – Honda exhaust-port gasket reference used across the checked applications
- 18422-K26-900 – Honda muffler mounting collar reference used across checked MSX125 applications
Important Compatibility Checks
- Confirm the motorcycle model and production year before ordering.
- Compare the cylinder-head exhaust flange and port position with the supplied pipe.
- Check the silencer mounting point and bracket position against the frame / footrest hanger.
- Check clearance around the swingarm, rear brake, bodywork and sump.
- Inspect the existing exhaust-port gasket and replace it if damaged or compressed.
- Aftermarket rearsets, engine swaps, body kits or modified frames can change exhaust clearance.
Honda changed the original exhaust assembly during the MSX125/Grom model run, so OE numbers can differ even where an aftermarket full system uses a common replacement layout.
Fitting & Use
Fit all joints loosely first, align the pipe and silencer without stress, then tighten the cylinder-head and rear mounting points evenly. After the first heat cycle, allow the exhaust to cool and re-check the fasteners and joint security.
Because this is an aftermarket performance-style exhaust, noise level and road-use approval can vary by market. The buyer is responsible for ensuring the system meets any local road-use, MOT or competition requirements.
Delivery & Returns
- Fast UK dispatch
- Free UK delivery where shown on the product page
- 30-day returns subject to the Moto Mania returns policy