Full Exhaust System for Honda GROM (2013-2023)

High-Flow Full Exhaust System for 2013-2023 Honda GROM (JC61 / JC75 / JC92)

What it Does: The Full Exhaust System replaces the heavy, restrictive factory header and underbelly silencer on the 2013-2023 GROM to increase exhaust gas velocity, shed dead weight, and enhance high-RPM power output.

The Stock Honda GROM Exhaust Bottleneck

The OEM exhaust assembly on the 125cc GROM is built around heavy, stamped mild-steel tubing and a dense internal baffle network with an integrated catalytic chamber. This restrictive layout traps exhaust heat directly against the cylinder head, chokes high-RPM gas evacuation, and burdens the lightweight mini-moto chassis with excess weight.

The Engineering Solution

Engineered to maximize scavenging, this low-mount full system utilizes polished stainless steel tubing paired with a 51mm (2") carbon-look muffler canister. The smooth mandrel-bent link pipe minimizes turbulence and flow resistance, letting the single-cylinder JC61E / JC92E powerplant cycle gases efficiently under load. The modular slip-fit connection is held tight by dual retention springs to handle high-frequency engine vibration without fracturing welds or bracket tabs.

What's Included

• 1x Stainless Steel Link / Header Pipe
• 1x 51mm (2") Carbon-Look Muffler
• 1x Mounting Bracket Set
• Exhaust Retention Springs and Installation Accessories

Technical Specifications

Compatibility

• 2013-2015 Honda GROM / MSX125 (JC61)
• 2016-2020 Honda GROM / MSX125 SF (JC75)
• 2021-2023 Honda GROM / MSX125 (JC92)

Frequently Asked Questions & Fitment Warnings

Does this fit the JC61, JC75, and JC92 GROM?

Yes, this is a direct fit for the 2013-2023 Honda GROM equipped with the JC61E / JC92E 125cc horizontal single engine.

Do I need to remove the internal reducer before installation?

Yes, ensure the 51-38mm adapter sleeve seated inside the muffler inlet is removed prior to sliding the canister onto the 51mm link pipe.

The Honda Tuning Caliber

Designed to withstand hard street and closed-circuit thrashing, this free-flowing exhaust unleashes an aggressive, deep exhaust note while shedding rotational inertia and static weight from your GROM chassis.