Yes, of course and you're right.
I initially considered this set because the wheels are exactly how I would spec them.
www.vmx-racing.com
But I want a 4.5 in the rear.
I initially considered this set because the wheels are exactly how I would spec them.

VMX 3.5/5.0 Supermoto Complete Wheels Rims Set Compatible with Stark Varg All Black
Items include:a 3.5*17" front wheela 5.0*17" rear wheela set of spacers & sealsa 320mm black front disca 220mm rear disca silver adapter