Engine Displacement to Weight (cc) 2.24 2020 BMW C 650 GT. $10,995 MSRP. 2020 BMW F 850 GS Adventure. $14,445 MSRP. 2020 BMW F 850 GS. $13,345 MSRP. BMW C 650 GT ABS: 2012: 2021: YTX14-BS: YTX14-BS Lithium: BMW C 650 GT Edition ABS You’re looking at a weight saving of around 2kg and up to 5kg when you switch E1Hq.