I've always heard that a 14T front sprocket on a Honda Grom actually let's it hit a higher top speed, despite conventional wisdom. So we're trying it and going to a 14T front, 38T rear, and doing to 428 pitch sealed chain instead of the stock 420 plain chain.
Oh, and it's gold! I can't help it. I might have a problem.
Sprocket Center Kit: https://sprocketcenter.com/i-30500259-428-conversion-kit-superlite-rsx-steel-sprockets-did-chain-honda-grom-22-23.html
(14T superlite front, 38T superlite rear, DID428VX chain, and M10 nuts)
Motion Pro Master Link Pliers: https://www.motionpro.com/product/08-0230
Motion Pro Mini Chain Press tool: https://www.motionpro.com/product/08-0070