Here is the new product from BarrowPro, the rear swivel wheel conversion kit for Carp Porter MK2 Big Boy.

Actually it would fit all the barrows with high handle bars as the mounting gap is adjustable.

Please feel free to ask when any interests. Thank you!

You can see the 24V 350W power wheel conversion kit here:

In reply to Post #1
Hi, what price is the rear wheel conversion and will they fit a standard MK2 carp porter.

In reply to Post #2
hello Pat, will be about 219 pounds when you order from our eBay authorized store.

https://www.ebay.co.uk/itm/136950159224

Yes can fit a standard Carp Porter MK2, however you may need higher bars as the original ones might be too low.

This rear wheel kit fits Carp Porter MK2 Fat Boy very well as it comes with high handle bar. Thanks.

However our power wheel conversion kit definitely fits your standard MK2

Have a look at the barrow buddies rear swivel wheel kits they are very good, and also the first i saw of the idea/design

Hello there, yes we have seen the rear swivel kits from barrow buddies company online. They must be good at barrow conversions either.

Our company started with researching and develping barrow products in the year 2024 based on a Carp Porter Big Boy Tri-Porter as our boss liked it very much. With almost 20 years experience in dirt bike parts, several products were designed and manufactured successfully after multiple attempts. Especially this rear swivel wheel kit, we decisided to develop swivel wheels when we found it hard to turn. And we tried lot of design solutions as you see.





Unfortunately, due to uncontrollable reasons, our drawings was leaked and the design of adjustable wheelbase was copied in April 2025. That delayed the publish date of our new rear swivel kit. However we kept on researching and finally got a complete new design with not only adjustable wheelbase, but also the mounting distance. So that we can fit the kit onto barrows with different widths.




Then you can see the final version, which is strong, stable and looks much stylish with new adjustable A type mounting arms and 10'' swivel wheels. We use use punture-proof tyres in order to avoid any risk of outdoor use.