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A mirror upgrade is the cheapest change you can make to a Grom or an Integra. It is also the part most often returned, and the cause is almost never the glass. It is the thread. Our adjustable rearview side mirrors for the Honda MSX 125 Grom and NC700D Integra (2014-2023) ship as one pair for both bikes, because the two mounts differ.

This guide gives you the checks to run before you order. They apply to any brand.

Check the thread before anything else

Know which bike you own, then match the boss (the threaded hole that holds the mirror).

• Grom MSX125: 8 mm stems. The left mirror is right-hand thread; the right mirror is left-hand (reverse) thread.
• Why reverse: bar buzz then works against loosening.
• Integra NC700D / NC750D: a 10 mm x 1.25 stud, the standard Japanese streetbike pitch.
• Wrong hand: the stem spins without clamping, and forcing it strips the aluminium boss.

The Integra adds one more rule. Owner threads report about 20 mm of usable thread on the left stud, so a long aftermarket stem bottoms out before the head is upright.

The numbers to match

Everything you need to check sits in one table.

OEM-position or bar-end: where the mirror lives

Both styles bolt on. They trade view against looks, so pick by how you ride.

• OEM-position replacement: bolts into the stock boss. Keeps factory sight lines, stays out of car-door range.
• Bar-end mirrors: mount into the open end of the 7/8-inch (22 mm) hollow bar with an expanding plug. You see past your arms, and the bike reads café-racer.
• Bar-end trade-offs: the head sits closer to your line of sight, and the plug needs clean, undeformed tube ends.
• Grom buyers: order plugs for a 7/8-inch hollow bar, not the threaded adapters sold for solid 1-inch cruiser bars.

All three routes below are in stock:

• Bar-end route: the pair of 7/8-inch 22 mm hollow bar-end mirrors for the Grom MSX125 and custom 125cc builds.
• OEM-position route at a lighter price: the left-and-right rearview pair listed for the Rebel 300/500 and Grom 125.
• Mixed garages (Yamaha, Suzuki, ATVs too): the universal wing mirrors built around both 8 mm and 10 mm mounts.
• Everything else, including body and light parts: the exterior and motorcycle components collection.

What the 2014-2023 label really covers

Seller year ranges are conventions, not Honda generations. Here is what the label hides.

• Grom: the range spans all three MSX125 generations — 2013-2015, 2016-2020 and 2021-2023. The boss and the bar carried over, so one pair serves all three.
• Integra: the NC700D ran 2012-2013 with a 670 cc engine. The NC750D took over in 2014 with 745 cc and standard DCT. European production ended around 2020.
• The fitment table prints "NC700D Integra 2012-2023". The hardware agrees; the years do not.

One shared spec makes Honda parts cross over between families. The rearview mirror set listed for the Grom MSX125, NC700, NC750 and CRF1000L Africa Twin is one kit wearing four nameplates, because every model on that list shares the 10 mm boss.

Do the cockpit refresh at the same time

Pulling the bar apart is the moment to add two cheap upgrades:

• Flush indicators: the flush LED turn signals for the 2014-2020 Grom 125 replace the stock stalks on their own wiring.
• Full spec breakdown: our Grom flush LED turn-signal guide with DTC mapping and OEM cross-reference.
• Going further with a lockset: the ignition-switch and fuel-cap lock guide takes the same spec-first approach.

What mirror law asks of you

Mirror law in the United States is state equipment law. The common floor is one rearview mirror; a few states want more.

• Maryland (COMAR 11.14.03.10): one mirror on each handlebar, each with at least 7 square inches of reflective area.
• Texas (Transportation Code §547.602): the mirror must show the road behind for at least 200 feet.
• Pennsylvania (67 Pa. Code §175.148): at least one mirror on the left or center.
• Federal level: no FMVSS mirror mandate for street bikes. State inspections do the enforcing.

Two heads, one per handlebar, satisfies every state at once. Run these checks before the first ride:

1. Check the glass area. 7 square inches is roughly a 2.7-inch square, so ultra-minimal blanks are the setup that fails.
2. Sit in the riding position and confirm you can see past both hips to the lane behind.
3. Keep at least one mirror on a handlebar, not on a fairing alone.

Frequently asked questions

Order the mirror that matches the mount