Honda CBR 900 rr Fireblade 1994 Streetfighter: Near zero sag after 17" wheel & Hyperpro swap – Geometry ruined?
Hi everyone,
I’m struggling with the setup of my 1994 SC28 Streetfighter build and could use some advice. I’ve made the following changes:
- Suspension: Hyperpro progressive springs in OEM forks; Hyperpro spring on the OEM rear shock.
- Wheel: Swapped the stock 16" for a 17" front wheel.
- Current Settings: Forks dropped 6mm through the triples. Rear preload on notch 2. Front preload at 5 rings showing.
The Problem:
I have almost zero sag. I’m measuring only 4mm rear sag and 5mm front sag. The bike feels way too topped out.
The Question:
Is my geometry/suspension balance completely ruined by the combination of the 17" wheel and the stiffer Hyperpro springs? How do I get my sag back into the 25-30mm range without making the bike unrideable?
Any insights on spacer lengths or specific SC28 settings for this setup would be much appreciated. Thanks!