We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
This range of Kelford Camshafts to suit the Subaru WRX STi EJ257B dual AVCS features the same successful lobe designs used on the earlier engines. The Dual AVCS on this engine is a great tool for the tuner to provide a greater operating range. The Kelford range of camshafts feature a unique camshaft design technology called “ICE” or Improved Combustion Efficiency. This “ICE” split duration design has in turn created a significant combustion efficiency gain for these engines. No other aftermarket camshaft company offers this unique technology.
Race and rally cams with high lift and low duration for great throttle response.
SPECIFICATIONS
- 264 & 260 / 260 Degrees advertised duration.
- 10.70mm & 10.20mm / 10.20mm lift.
| Valve Clearance: | Intake: | 0.20mm | Set | COLD | at the | CAM | |
| Exhaust: | 0.25mm | Set | COLD | at the | CAM | ||
| Cam Lift: | Intake: | 10.90mm | Exhaust: | 10.45mm | |||
| Rocker Ratio: | Intake: | 1 | Exhaust: | 1 | |||
| Nett Valve Lift: | Intake: | 10.70mm | Exhaust: | 10.20mm | |||
| Advertised Duration @ | 0.25mm | Intake: | 264 | Exhaust: | 260 | ||
| Duration @ | 1.00mm VALVE LIFT | Intake: | 225 | Exhaust: | 222 | ||
| Timing @ | 1.00mm VALVE LIFT | IVO: | 17.5 ATDC | EVO: | 57 BBDC | ||
| IVC: | 62.5 ABDC | EVC: | 15 BTDC | ||||
| Suggested Centre Lines: | Intake: | 130 | Exhaust: | 126 | |||
| VALVE | Lift @ TDC | Intake: | 0.03mm | Exhaust: | 0.07mm | ||
Vehicle Fitment
- 2008 - 2021 Subaru STI
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to https://www.P65Warnings.ca.gov/passenger-vehicle.
| SKU | kef220-B |
|---|---|
| Manufacturer's Part Number | 220-B |
| Brand | Kelford Cams |
| Product Type | Engine |
| Engine | Cylinder Heads and Valvetrain |






