Ford Focus ST 2017 Owner's Manual Supplement page 12

Exhaust system
* SAE Certified Performance ratings are achieved with 19.5 psi, but up to 21 psi can be
delivered to maximize power depending on fuel quality and atmospheric conditions.
Suspension Specifications
Front suspension
Rear suspension
Front spring rate
Rear spring rate
Front stabilizer bar
Rear stabilizer bar
2017 Focus ST (CDH) ST, Canada/United States of America, HM5J 19A285 AB enUSA, Edition date: 201608, Second Printing
At a Glance
Item
Turbo
Item
Description
Single scroll / 21 psi max boost*
2.5 in (63.5 mm) diameter
Description
MacPherson strut with L-arm front
suspension and revised knuckle
Fully independent control blade SLA with
revised stabar routing
171 lb/in (30 N/mm)
183 lb/in (32 N/mm)
0.945 in (24 mm) diameter x 0.157 in
(4 mm) thick hollow
0.866 in (22 mm) diameter
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