Hiflo is a brand of very high-quality filters. This one is a very good filter which also works perfectly on your Cafe Racer.

Will fit on the following motorcycles:

CBR400 RG,RH-YA Aero (Japan) Japan 
NV400 Custom (Japan)NC26Japan 
VF400 F2E (Japan) Japan 
VF400 FC (Japan) Japan 
VF400 FD 83-86
VFR400 ZG,RG,RG-YA,ZH (Japan)NC21Japan 
VF500 C-V30 Magna 84-85
VF500 FD,FE,F2E PC12 84-85
VF500 FF,F2F 85-87
VT500 C Shadow 83-86
VT500 ED Eurosport 83-85
VT500 EF Eurosport 86-88
VT500 FT Ascot 83-84
CB700 SC Nighthawk (USA) USA84-86
VF700 C Magna (USA) USA84-86
VF700 C Magna (USA) USA87
VF700 F Interceptor (USA) USA84-85
VF700 S Sabre (USA) USA84-85
VFR700 F,F2 Interceptor (USA) USA86-88
VT700 C Shadow (USA) USA84-85
VT700 C Shadow (USA) USA86-87
CBX750 FE,FG,F2G RC17 84-86
VF750 C V45 Magna RC09 82-83
VF750 C V45 Magna 87-89
VF750 FD,FE,FF RC15 83-85
VF750 S V45 Sabre RC07 82-83
VFR750 FG,FH RC24 86-87
VT750 C Shadow 83
VT800 Shadow 88
VF1000 F Interceptor 84-85
VF1000 FE,FF,F2F SC15 84-85
VF1000 RESC16 84
VF1000 RF,RG SC16 85-86
VF1100 C V65 Magna 82-86
VF1100 CD,CE 83-84
VF1100 S V65 Sabre 84-85
VT1100 C Shadow 87-88

Kawasaki

EX400 A3,A4 (GPZ400S) (Japan) Japan89-90
EN450 A1-A6 (454 LTD) 85-90
EX500 A1-A4 (GPZ500 S) 87-89
VN700 A1,A1L,A2,LTD Vulcan 84-85
VN750 A2-A7 Vulcan 86-91