The Honda Grom is a popular small-displacement bike prized for nimble handling and fun riding. Upgrading the exhaust can improve airflow, sound, and throttle response. This guide highlights five exhaust options that are specifically or commonly used with the Grom, focusing on slip-on kits and universal designs that suit 125cc builds. Each product features materials, installation notes, and performance considerations to help riders choose the right upgrade for power without modifying the stock header.
| Product | Brand | Material / Design | Notes |
|---|---|---|---|
| Muffler Exhaust Kit Fit For Honda Grom 125cc Slip On | Generic | Stainless steel, brushed finish | Slip-on kit; complete with pipe, muffler, bracket |
| Exhaust Muffler Kit Fit for Grom 125cc Slip on Carbon Exhaust | Generic | Carbon fiber wrapped muffler; stainless mid-pipe | Carbon-wrap durability; easy slip-on design |
| DREAPATS Universal Slip on Modified Exhaust Mufflers | DREAPATS | Stainless steel, adjustable fit 38–51 mm | Universal compatibility; includes DB killer and hardware |
| 38mm-51mm Motorcycle Exhaust Tips, Slip-On Exhaust for Grom | FLYPIG | Stainless steel, dual-outlet design | Weight-reducing, enhanced flow for power |
| LNTOR 38mm-51mm Motorcycle Exhaust Tips | LNTOR | Stainless, brushed finish | Designed for 51 mm exhaust port; compatible with Grom |
Muffler Exhaust Kit For Honda Grom 125cc Slip On
This slip-on muffler exhaust kit is designed specifically for the Honda Grom 125cc, offering a straightforward installation with a complete set that includes the exhaust pipe, muffler canister, and mounting bracket. Built from stainless steel with a brushed finish, the kit emphasizes durability and corrosion resistance for everyday riding. Riders may notice improved exhaust flow and a sportier tone, especially when paired with a compatible stock header. The kit is best suited for riders seeking a ready-to-install upgrade without extensive fabrication.
Exhaust Muffler Kit Fit for Grom 125cc Slip on Carbon Exhaust
This carbon-wrapped muffler kit for the Grom 125cc combines a carbon fiber muffler body with a stainless steel mid-pipe for durability and corrosion resistance. The slip-on design enables installation without modifying the stock header, making it a popular choice for riders who want a lighter, sportier exhaust note and improved exhaust flow. The kit includes all necessary mounting hardware, springs, and clamps. Expect a more aggressive exhaust note and potential gains in throttle response with proper jetting and air intake considerations.
DREAPATS Universal Slip on Modified Exhaust Mufflers
The DREAPATS universal exhaust muffler is crafted from stainless steel for heat resistance and anti-corrosion properties. It fits 38–51 mm link-pipes and downpipes, making it adaptable to the Grom and other 125cc-class bikes. The kit includes DB killer/baffle, springs, hooks, clamps, and a universal connecting pipe. Fitters should confirm exact diameter compatibility and consider minor welding or modification if needed. This option suits riders who want a versatile muffler with a blend of performance and adjustability across different machines.
38mm-51mm Motorcycle Exhaust Tips for Grom
These 38mm-51mm exhaust tips are designed for 1.5–2 inch exhaust ports and offer a dual-outlet design intended to reduce overall weight while maximizing flow. Compatible with the Honda Grom and other 51 mm diameter systems, the tips can contribute to a sportier look and improved muffler efficiency. The stainless steel construction resists scratches and discoloration, and the brushed finish maintains a clean, aggressive appearance on track or street rides. They are best used in conjunction with a compatible slip-on or connector pipe for a proper seal and alignment.
LNTOR 38mm-51mm Motorcycle Exhaust Tips
The LNTOR exhaust tips are built for 51 mm exhaust ports and emphasize a brushed stainless finish for durability and a scratch-resistant surface. Their dual or single outlet designs help to improve flow and reduce exhaust pressure, which can contribute to marginal gains in horsepower and torque on tuned Grom setups. As with other slip-ons, compatibility with the Grom may require adapters or clamps, and riders should verify exact diameter matching and installation clearance to avoid contact with the swingarm or chain guard.
Buying Guide: Key Purchase Considerations
- Fitment and compatibility: Confirm whether the exhaust is a slip-on designed specifically for the Grom or a universal model with adjustable diameter (38–51 mm). Ensure the mounting brackets and hardware match your bike’s exhaust system and frame clearances.
- Material and durability: Stainless steel and carbon fiber-wrapped mufflers offer corrosion resistance and heat tolerance. Carbon fiber adds a lighter aesthetic, but may require more care in UV exposure and impact resistance.
- Sound and performance: Slip-ons typically alter sound and throttle response more than full systems. Expect louder notes and potential slight gains in flow; jetting or air intake upgrades may complement the exhaust for noticeable power increases.
- Installation effort: Some kits are plug-and-play with brackets and hardware included; others may require minor welding or modifications. If you’re not comfortable, consider professional installation to ensure proper sealing and performance.
- Weight and flow: Dual-outlet tips or lighter materials can reduce overall exhaust weight and improve exhaust gas flow. Consider how changes impact the bike’s balance and handling, especially on a lightweight platform like the Grom.
- Legal and maintenance considerations: Check local noise and emission regulations. Maintainability is important—look for parts with accessible hardware and replaceable gaskets, springs, and clamps.
- Aesthetic preferences: Choose between a brushed stainless, carbon wrap, or polished finish to match the bike’s styling and your personal preference for sportiness or stealth.