BNR Stage 1 Turbocharger for Mazdaspeed 3 / 6 / CX-7
BNR Supercars has engineered 4 stages of turbocharger upgrades for the Mazdaspeed 3, Mazdaspeed 6, and the Mazda CX7. These upgrades were designed to be a replacement for the K04 factory turbocharger. The stock K04 is a throw away unit that shouldn't be rebuilt. The weak points of the K04 is the long shaft length, small shaft width, and thrust bearing design. BNR's new designed replacement/upgrade far overshadows the K04 turbocharger that comes equipped on the Mazdas.
The benefit of the BNR upgrade is the increased shaft size, shorter shaft, bigger bearings, better thrust bearing assembly, better turbine wheel, more efficient compressor wheel, and last but not least, more reliable. No question this upgrade is far more superior to the original equipment turbocharger on the Mazdas.
The BNR stage 1 is a 100% bolt up no fabrication required. It flows enough for 320 AWHP/350 FWHP. It consists of a GT28 Disco Potato non ball bearing CHRA (center housing rotating assembly). The end housings are CNC machined to fit the CHRA and all factory oil lines, water lines, and stock wastegate actuator bolt up with no issues! This is perfect for someone that wants reliability but be as close to stock as possible.
The BNR stage 1 consists of:
- GT2860 compressor wheel
- CNC machined turbine and compressor housings
- GT28 CHRA (center housing rotating assembly)
- High performance thrust assembly
- Upgraded turbine wheel
- Full set of replacement studs
- 1 year warranty