LOBA 600 hp+ Upgrade Turbos for for Audi RS4 B5, S4 B5, A6 C5



Loba LO600 turbochargers utilize an OEM RS6 hotside and pair it to a highly modified RS4-K04 cold side. The hot side is modified on a 5-axis CNC machine to optimize exhaust flow, while the cold side is also modified to suit larger and more efficient compressor wheels. Compared to an OEM RS6 turbo, the LO600 will spool quicker and allow for more top end.

Both compressor and turbine are balanced as single parts to less than 0.05 gmm and then balanced together to far higher standards than OE and use a reinforced LOBA bearing for consistent motorsport durable performance. Last but not least is we modify the OEM actuator. 

LO600P are the very best compromise of balance between high power output, longevity and fast turbo response. A turbocharger upgrade well suited for motorsport use or street.

Because of their RS4-K04 coldside, these turbos can be used with RS4 inlet pipes. The exhaust flange will need to be an RS6 flange.

The following LOBA specific optimizations were applied

• “Extended Tip” Compressor wheels with state-of-the-art compressor geometry
• LOBA 5-axis CNC re-profiled compressor housings and backplates
• LOBA 5-axis CNC re-profiled, hand finished RS6 turbine exhaust housings for maximum flow capacity
• LOBA Clipped larger turbine wheels
• LOBA Optimized clearances
• LOBA Uprated bearings
• LOBA Modified actuators 
• LOBA Superior Balancing
• Made in Germany