Technical Infomation.
FREX100 – Twin Scroll Exhaust HeadersManufactured from SUS304 Stainless Steel
12mm Thick Flanges
36-40mm Inner Diameter tubing to help with turbo spool
Ported Exhaust flanges to reduce turbulence in the manifold.
Tubing is 1.5-2mm thick
Less sharp bends than OEM to improve Turbo Spool
Lightweight design 9.7KG. OEM weighs 13.5KG
Application Models. Subaru Impreza Twin Scroll
FREX101 – Equal Length Single Scroll Exhaust Headers
Manufactured from SUS304 Stainless Steel
12mm Thick Flanges
38mm Primary tubing inner diameter40mm secondary to up pipe tubing inner diameter
56mm inner diameter up pipe with 45mm inner venturi to help the turbo spool
Equal length exhaust primary tubing to also help the turbo spool but reduce the boxer ‘rumble’ sound
Tubing is 2mm thick
3 Bolt Lower Uppipe flange to increase the flange clamping force
Lightweight design 8.95KG. OEM weighs 14KG
WILL NEED SUMP CHANGING IF FITTING TO A PRE 2005 SINGLE SCROLL CAR
Application Models. Subaru Single Scroll Models
FREX102 – Un-Equal Length Single Scroll Exhaust Headers
Manufactured from SUS304 Stainless Steel
12mm Thick Flanges
38mm Primary tubing inner diameter
40mm secondary to up pipe tubing inner diameter
56mm inner diameter up pipe with 45mm inner venturi to help the turbo spool
Un-Equal length exhaust primary tubing which keeps the iconic boxer ‘rumble’ sound
Tubing is 2mm thick
3 Bolt Lower Uppipe flange to increase the flange clamping force
Lightweight design 9.5KG. OEM weighs 13.5KG
Application Models. Subaru Single Scroll Models
FREX108 – Un-Equal Length NA Exhaust Headers
Manufactured from SUS304 Stainless Steel
12mm Cylinder Head Thick Flanges
10mm Link Pipe Flanges
38mm tubing inner diameter
56mm decat Link Pipe inner diameter
Un-Equal length exhaust primary tubing which keeps the iconic boxer ‘rumble’ sound
The un-Equal design also helps improve Engine Torque & Response
Tubing is 1.8mm thick
Lightweight design 8.5KG. OEM weighs 11.5KG
Application Models. Subaru BRZ NA