Thats a Caterham Super 7, and they are all like that
watch this
and its no bike engine:
there are two versions :
CATERHAM 1600K GT (34 000Euros)
1.6L rover engine 16 valve inline 4 110hP
AND
COSWORTH CATERHAM CSR 260
2.3L Cosworth 250hP (58 000Euros)
Enjoy b1tches