Have a look at these Pics : 1 hour it takes to equipe your RC 51 with an Airbox.

         31 Steps,31 Pics.

         You've nothing to cut ,you don't have to buy a HRC-Fuel Tank,just keep your std.Thermostat 

         and hoses,prolong or shorten no cable,no line-only install.

         Simply made to fit for stock.

         Regards:Thorsten

1                    remove the Fuel Tank and std Airbox Cover,remove the crap Filters

2                 remove the funnels    

3                    remove the Clamp of Oil Breather Canister

4                   remove this two superfluous hoses

5                  remove the box

6                      disengage the gas - cables

 7                  disengage the choke from holder

8                    disengage the low rpm-switch(?) from holder

 9                   cut the Injection-plugs

10                    untie the gaskets screws

11                     remove the injection,turn it upside-down and remove this tiny hose 

12                     thats what you see now.

13                     remove the baro-sensor from std.Airbox-Cover

 14                .......and plug it into the std.plug

15                   remove the metal shield in front

16                      bend the rubber covered clamp of sensor down

17                       push this cables in front

18                        ......then install Airbox,and with some Pressure,fix front gasket.

19                            ............only a sealing demonstration

20                          put this line through hole

21                  ok,another sealing demonstration

22                           the other side of the hole (hoho)

23                     whats that?

24                   to become serious:have you ever seen a sealing - rubber like this ?

25                        ...no?ok,so plug together and forget

26                  well,i'm boring

27                  remove the distance-rubber

28                  front fuel tank section sealing rubber

 29                ................

 30                  this way it works

 31                 as you see,you see nothing

AIRBOX  REMOVING

  take a screwdriver,put some tape around the top

Airbox has a designed cutting for removing

after lifting rear,pull at front section

                                                 Some more Pics will follow