Here's the top speed and acceleration you can expect on a mishmash of Sur Ron sprocket sizes, chains, and 60v vs 72v battery voltage setups.
My Sur Ron Upgrades
Power/Speed
Sprockets
✔ Sur Ron 54t Sprocket: https://amzn.to/3xGJgUk
✔ Sur Ron 58t Sprocket: same link
Warp 9 makes a variety of sprocket sizes all listed in the same place. I find that smaller sprockets tend to bog the motor down more, but feel natural cruising at high speeds at the expense of battery range. Large sprockets seem to increase range and acceleration and feel zippy at the expense of top speed at a certain point, which seems to be about 54t where it cuts into top speed on the stock wheel size. I'm currently enjoying 58t, but it is a bit twitchy.

Chains
✔ Renthal Chain: https://amzn.to/3OMxgI3 (don't forget chain breaker tool)
✔ ProTaper Chain: https://amzn.to/3l9IBID (cheaper and can't tell a difference vs Renthal)
These are both non oring chains. I've been looking for an X ring chain to replace the non oring chain which will like likely reduce range, top speed, and efficiency (when clean), but will be quieter. I want an xring instead of oring because word on the street is xring is more efficient than oring but offers the same noise reduction, and also less maintenance than non o/x ring.

Controller
✔ BAC4000: https://bit.ly/BAC4000 Discount Code: JUICED15

72v Battery
✔ Battery: 72v 38ah Tell Chi you want to support Juiced Joyrides and ask them to give me a discount code for you to use (they keep ignoring me, despite all the positive visibility I've given them for 6+ months. I kinda wish I got a battery from a company that supports all creators equally, ebmx actually has a better 72v/42ah for basically the same price)

✔ Brake pads: https://amzn.to/3tT7FVM

Comfort
✔ Handlebars: https://amzn.to/3xDaIlU (in stock)
✔ Peg extension and stabilizer: https://amzn.to/3N3AJAw (in stock)
✔ Seat Extender: https://amzn.to/3bjm2fi (stronger)
✔ Foot Pegs: https://amzn.to/3n5Wbdy
✔ Grips: https://amzn.to/3O4gh3P

Handling
✔ Fork/Suspension: https://bit.ly/Fastace (discount code JuicedJoyrides5off (5% Discount)
✔ Tires: https://amzn.to/3O9ljMA

My channel uses auto affiliate links which can earn this channel commissions as well as save you money.

Over the past 11 months I've tweaked and tuned the Surron quiet a bit and thought I'd share the video clips I've acquired highlighting mostly surron top speed, but also showing 060mph acceleration as well.