Wheelbase 2007+ 600cc
62–63"
Wheelbase '98–'06 600cc
60–61½"
Wheelbase 250cc
Generally 59¾"
Caster baseline
8° (range 6–10°; direct steer may prefer 12°+)
Front axle offset start
¾" more on right (front offset right)
Rear setup blocks (timing)
2¾" between rear axle and lower rail
Rear axle square tolerance
Within 1/32"
Toe
1/16" toe-out (coil-over & torsion); avoid toe-in; up to ½" out OK
Top wing angle start
12–28° (protractor on front of center section); mount wing forward-most hole/slider
Wing weight limit (coach)
Wings >18 lb not recommended (CG inconsistency)
Tire pressure envelope
2–8 psi typical race band; more pressure on tacky
Rear weight bias (wishbone/4-link)
62–65% rear (scale with driver)
Crossbite target
~42–49% (RF+LR)/total
RR vs LR scale feel
0–15 lb heavier RR than LR with recommended Hyper shocks
600 winged mid-window stagger (class)
4–6" rear
600 winged mid-window PSI (class)
LF 8 / RF 10 / LR 7 / RR 9 cold start window
Stagger procedure
RR circ − LR circ; prestretch new tires to 20 psi then race pressure
Hyper coaches via axle square, panhard for lateral axle, caster, and wishbone/radius geometry — not a published RC height.
Youth 600: re-establish Hyper baseline every 4 races or after contact. Wing 0.25° steps after hot stagger settles.