Akrapovic
I could be wrong but there?s something not quite right about that Akrapovic exhaust.
https://www.akrapovic.com/en/moto/product/20716/BMW/S-1000-RR/2022/Slip-On-Line-Titanium?brandId=44&modelId=377&yearId=6598
Lithium Battery
I?ve owned my track only Gen 4 (with OEM Lithium battery) for a couple of years now. To date I?ve never used a trickle charger and I?ve not had any issues at all.
BMW OEM Radiator Guards
The OEM BMW radiator guards simply attach via mounting clips to the inner black fairings as pictured in the eBay link in Post #573. That said they aren?t particularly good, but they are cheap and better than nothing.
Here is a link to the Gen 4 (K67) parts diagrams on realoem.com:
https://www.realoem.com/bmw/enUS/partgrp?id=0E21-EUR-12-2019-K67-BMW-S_1000_RR_19_0E21%2C_0E23_
Dash Protector
I have a Bonamici dash protector fitted. Extremely well made and definitely worth the money when you consider just how much a replacement OEM dash is from BMW.
FullSix Wings
Those look pretty dreadful and appear to be designed around avoiding the 'RR' and 'S1000" decals as opposed to offering any aerodynamic benefit. The website claims are somewhat dubious as if you are racing an M1000RR you will be using the M wings and most certainly not these.
Sump Removal
To remove the sump you are best off removing the collectors from the exhaust. Akrapovic exhaust systems are made up of three parts. Headers, collectors and link pipe/exhaust. You should be able to remove the latter two parts, leaving the headers in place, allowing you space to...
Any SWB medium sized van (Transit, Transporter, Vivaro etc) will be absolutely fine. Enterprise, Hertz et al are all pretty similar in price. Alternatively, you could try looking for a local hire company near you as they may be a bit cheaper.