Honda MSX125cc GROM 2016 – 2020

If you’re looking to transform your lightweight urban warrior into a genuinely thrilling machine, this British-made performance exhaust for the honda msx125cc grom 2016 – 2020 is precisely the upgrade your build has been crying out for. Crafted right here in the UK from premium T304 stainless steel, the Max Torque Cans header and downpipe combination is engineered to deliver measurable power gains, a more aggressive exhaust note, and a significant weight reduction — all while fitting as cleanly as the standard equipment it replaces.

Whether you’re commuting through city traffic, carving up a Sunday morning B-road, or prepping for trackday thrills, this exhaust system unlocks the true character of Honda’s beloved mini street fighter.

Why Upgrade Your Honda MSX125cc Grom 2016 – 2020 Exhaust System?

The honda msx125cc grom 2016 – 2020 is one of the most beloved small-capacity motorcycles on UK roads. Fun, flickable, and endlessly customisable, the GROM has earned a devoted following among commuters, trackday enthusiasts, and weekend riders alike. However, the factory exhaust is a compromise — heavy, restrictive, and laden with emissions hardware that throttles performance before you’ve even left the driveway.

The standard cat box is designed to meet strict emissions legislation, but it comes at a cost: reduced airflow, muted sound, and unnecessary weight.

By replacing the standard setup with a Max Torque Cans British-made header and downpipe, you’re removing that restriction and allowing the engine to breathe freely. The result is a smoother, more responsive power delivery across the rev range — exactly what the honda msx125cc grom 2016 – 2020 deserves. You’ll notice improved throttle response, a crisper exhaust note that actually sounds like a motorcycle should, and a noticeable reduction in overall weight that transforms the handling characteristics of this already nimble machine.

What’s Included with This Honda MSX125cc Grom 2016 – 2020 Exhaust Kit?

Every order includes everything you need to complete the installation with confidence. The kit comprises a British-made T304 stainless steel front pipe and header — precision-formed to match the factory fitment exactly, so installation is straightforward and clean. You’ll also receive a full downpipe that fits right up to and including a rear silencer of your choice, giving you total freedom to pair it with your preferred performance can.

The header is designed to improve exhaust gas flow significantly compared to the standard unit, helping your engine produce more usable power once the restrictive cat box has been removed.

Please note: use a normal silicone-based sealant rather than the factory gasket in order to achieve a proper gas-tight seal. This is a simple step that ensures long-lasting, leak-free performance and prevents any annoying exhaust blow that can develop over time with inferior sealing methods. The quality of the T304 stainless steel construction means this system will resist corrosion and maintain its appearance through British weather and countless heat cycles.

Weight Savings on the Honda MSX125cc Grom 2016 – 2020

Weight matters on a small bike — arguably more than on any other type of motorcycle. Every kilogram you shed improves handling, acceleration, and the overall riding experience. Here’s how the Max Torque Cans setup compares to the standard factory pipe: the standard downpipe weighs 4 kg, whilst the MTC downpipe and silencer combined weight is just 3 kg, delivering a total weight saving of 1 kg.

On a lightweight motorcycle like the honda msx125cc grom 2016 – 2020, a full kilogram reduction is genuinely noticeable. Combined with the improved gas flow from the T304 stainless header, you’ll feel the difference from the very first ride — sharper turn-in, quicker acceleration, and an overall more engaging riding experience.

Fuelling and Air Filter Notes for the Honda MSX125cc Grom 2016 – 2020

MTC exhausts are specifically manufactured to deliver maximum power without requiring any changes to the standard fuelling. This means you can bolt the kit on and ride straight away without visiting a tuner or investing in additional hardware such as a Power Commander or aftermarket ECU. That said, if your honda msx125cc grom 2016 – 2020 is already running an aftermarket air filter and/or a de-cat, then having the fuelling professionally mapped will always complement the engine’s performance and efficiency.

In that scenario, a remap is a worthwhile investment that will extract every last bit of power from your upgraded setup and ensure the air-fuel ratio remains optimal across the entire rev range.

Installation and Fitment for the Honda MSX125cc Grom 2016 – 2020

One of the standout features of this kit is how closely it mirrors the OEM fitment. The British-made T304 stainless front pipe is shaped to drop straight into the standard mounting positions on the honda msx125cc grom 2016 – 2020, meaning you won’t need specialist tools or fabrication skills to get it fitted. A competent home mechanic should have no trouble completing the installation in a single session with basic hand tools.

Key installation points to keep in mind: remove the standard cat box as part of the installation to achieve the best power gains from the improved exhaust gas flow. Use a silicone-based sealant at all joints in place of the factory gasket — this creates a durable, gas-tight seal that won’t degrade with heat cycles.

Pair the downpipe with your chosen rear silencer or performance can — this kit is compatible with a wide range of aftermarket options. Double-check all fixings once the bike has gone through a heat cycle to ensure everything remains torqued correctly.

If you’re browsing for inspiration for other Honda builds, take a look at the Honda Monkey Z125cc Performance Exhaust Muffler & System — another brilliant British-made upgrade for small-capacity Honda enthusiasts who demand quality and performance.

Frequently Asked Questions — Honda MSX125cc Grom 2016 – 2020

Will this fit my 2016 GROM exactly? Yes. The header and downpipe are manufactured to replicate the OEM fitment on the honda msx125cc grom 2016 – 2020, so it will fit the 2016, 2017, 2018, 2019, and 2020 model years without modification.

Do I need to remap after fitting? No. MTC exhausts are designed to produce maximum power on standard fuelling. A remap is only recommended if you’re also running an aftermarket air filter or have already de-catted the bike.

What silencer can I use with this downpipe? The downpipe is designed to accept a rear silencer of your choice, giving you flexibility to choose the sound and style that suits your build perfectly.

Is this road legal? This kit is intended for performance use. Please ensure any modifications to your motorcycle comply with current UK road traffic legislation and your insurance requirements.

What material is the header made from? The front pipe is constructed from T304 stainless steel — a high-grade, heat-resistant material that offers excellent durability and a quality finish that will last for years.

The honda msx125cc grom 2016 – 2020 is a machine that rewards thoughtful modifications, and a quality British-made performance exhaust is arguably the single best upgrade you can make. Lighter, freer-flowing, and built to last — this is the upgrade your GROM deserves. Order yours today and experience the difference that proper British engineering makes to your ride.