If it's like my E-114 then the reach was done by cutting the bars down to the 'right' length. They were supplied about 6" too long, then you cut the end down to the length you needed. There was a bit of adjustment available after that in the 'socket' to cater for minor changes, but you may have already used that in the initial set up.

So it'll be new bars if they are too short. Having said that I've found Argon parts to be pretty fairly priced. Infact the E-118 uses standard bars I think, unlike mine that are oversized and so make everything a PITA... Check with your local dealer or failign that then the Argon website has a contact form and they are quick to flick to your local distributor to contact you.