Joined Dec 2009
2 Posts | 0+
Hi, I ride a 2000 year RSVR with standard throttle bodies (50mm or thereabouts) and have been considering upgrading to 57mm from a 2004 on model bike. I'd fit corresponding inlet stacks but my question is: what do I need to do about the stuff below the throttle bodies? Surely the inlet manifolds would need replacing too, but then what about the cylinder head inlets to the valves? Won't they also need machining? If so this seems like a lot of work. If not I'm not sure how the bigger bodies benefit if the air flow is restricted lower down the system. Any help greatfully accepted. Cheers.