Since volk makes a s*** load of wheels, I'm assuming you mean a particular type of volk? But volk does not make the lightest 17in wheel. Hell some volk wheels are 25 - 30 lbs.
Here are some light wheel options
Racing Hart CP-035R SSF 17x7.5 13.0lbs
Buddy Club P1 QF Forged 17x7.5 12.9lbs
Buddy Club P1 QF Forged 17x8 13.6lbs
Modex Ks-Ce Forged 17x7 13.0lbs
SSR Type-C (called Competitions in the US) SSF 17x7.5 13.0lbs
SSR Type-C (called Competitions in the US) SSF 17x8 14.3lbs
Volk CE28N Forged 17x7.5 13.8lbs
5Zigen Becket FN-01R Forged 17x8 14.6lbs
Volk TE37 Mag Forged Mg 18x8.5 12.9lbs <--- it's an 18in but it's LIGHT.
Pretty much all the wheels on that list are hella expensive. I personally have a set of the Buddyclub P1 SFs, which is the cast version on the QF. It's a good wheel.
That's just a few wheels from this list:
http://www.superhonda.com/tech/wheel_weights.html
So when you're shopping, you can usually find the wheel on that list. It's not very updated but most popular wheels are listed.