The Honda grom parts may be small in stature, but it punches well above its weight when it comes to fun, style, and customization potential. Whether you’re commuting through city traffic, hitting twisty backroads, or just want a head-turning weekend ride, the Grom delivers — especially when it’s upgraded with the right parts.
In this article, we’ll dive into some of the most popular and essential Honda Grom parts for maintenance, performance, and style, helping you unlock the full potential of your mini-moto machine.
🔧 1. Performance Upgrades
Exhaust Systems
Swapping out the stock exhaust is one of the most popular Grom mods. Aftermarket exhausts not only reduce weight and improve airflow but also give your bike a much more aggressive sound.
Popular options:
- Yoshimura RS-2
- Two Brothers Racing Exhaust
- Akrapovič Slip-On
These systems can also boost horsepower slightly when combined with fuel management tuning.
Air Intake & Fuel Controller
Upgrading your air filter or intake system increases airflow, and when paired with a fuel controller (like the Power Commander or aECU flash), it optimizes your fuel/air ratio for better performance.
Tip: Pair intake and exhaust upgrades for maximum gains.
Big Bore Kits
Want more power? Big bore kits increase engine displacement, often bumping the Grom from 125cc to 170cc or more. These kits usually include a new piston, cylinder, and sometimes a camshaft.
⚠️ Note: Big bore kits may require ECU tuning and supporting upgrades to keep your engine running reliably.
🏍️ 2. Suspension & Handling
Upgraded Forks and Shocks
The stock suspension is fine for casual riding but can feel soft during aggressive cornering or with heavier riders.
Common upgrades:
- Ohlins rear shock
- RaceTech fork springs
- Gears Racing suspension
These upgrades improve handling, reduce bottoming out, and add overall stability.
Tires
Tires dramatically affect grip and ride quality. If you’re still running the stock tires, consider switching to high-performance rubber like:
- Michelin Pilot Street
- Pirelli Diablo Rosso Scooter
- Dunlop TT93 GP
🛠️ 3. Maintenance & Replacement Parts
Routine maintenance is key to keeping your Grom running smoothly. Some essential parts to keep on hand:
- Oil filters and crush washers
- Spark plugs (NGK CR9E or similar)
- Chain and sprockets (consider changing gear ratio for different performance)
- Brake pads and rotors
- Battery (especially for older models)
Always check your owner’s manual for recommended service intervals.
🧩 4. Cosmetic & Functional Mods
LED Lighting
Upgrade your turn signals, headlight, and taillight with LEDs for better visibility and modern looks.
Body Kits and Plastics
Custom fairings, fenders, and panels let you transform the Grom’s appearance to match your personality — from supermoto to café racer style.
Bars, Levers, and Grips
- Adjustable levers for comfort and control
- ProTaper or Renthal bars for better ergonomics
- Aftermarket grips for added style and comfort
Seats
Aftermarket seats like the Corbin Grom saddle provide better support for longer rides.
🧰 5. Where to Buy Honda Grom Parts
Some top websites for Grom parts include:
- RevZilla
- TST Industries
- MNNTHBX (Man in the Box)
- Hard Racing
- eBay and Amazon (for budget builds)
Make sure you’re buying parts that are specifically compatible with your Grom’s year model, as there have been several generations (2014–2025).
🏁 Final Thoughts
The Honda Grom’s simplicity and affordability make it one of the most mod-friendly bikes on the market. Whether you’re chasing performance, aesthetics, or just a more comfortable ride, the aftermarket support for the Grom is massive.
So go ahead — wrench, tweak, and ride your Grom your way. Just don’t be surprised when you start getting stopped at every gas station by curious onlookers.