The CTS Stage 2 turbo upgrade is the standard Stage 2 turbocharger kit for the BMW N54 engine in the 335i, 335xi and 335is. If you want to get the best everyday power and torque out of your N54, this is the kit for you. These are brand-new units, so there’s no need to trade in a core or wait for a replacement.
Thanks to the larger impellers than standard, these turbos deliver 550–600 hp, with plenty of torque at the lower end of the rev range and excellent boost response, without compromising performance at the higher revs. The flow-optimised exhaust housings and high-efficiency compressor impellers ensure that less boost is required to achieve those power targets.
Features
- 6+6-blade 42.5/56 mm 15T billet compressor wheel
- 9-blade high-flow 41.46/44.5 TD04L turbine wheel
- TD04 upgraded thrust bearings
- Flow-optimised stainless steel exhaust manifold and exhaust housing
- bolt-on fitment, compatible with all downpipes and Charge Pipes
- 2" Turbo Inlet (requires aftermarket 2" inlets)
- Gasket and O-ring set included
- tuning for Stage 2 turbos is required
- No core return required; completely new units
- Suitable for 550–600 hp
Technical specifications
- compressor wheel: 6+6-blade 42.5/56 mm 15T billet
- turbine wheel: 9-blade high-flow 41.46/44.5 TD04L
- Pressure bearings: TD04 upgrade
- exhaust manifold and exhaust housing: stainless steel, flow-optimised
- Turbo Inlet: 2"
- Power potential: 550–600 hp
- Installation: bolt-on
- Weight: 18.1 kg
Contents of the set
- CTS Stage 2 N54 turbos, completely new units
- Manifold gaskets 11627558906, 6 pieces
- Gaskets for turbo to Downpipe 18307553601, 2 pieces
- O-rings for turbo oil and coolant lines 11427558936, 6 pieces
- turbo oil return gaskets 11422246091, 2 pieces
- O-rings for Charge Pipe 13717568030, 2 pieces
- Installation instructions
Frequently Asked Questions
Is tuning mandatory?
Yes, tuning is required for Stage 2 turbos.
Are these reconditioned turbos?
No, they are brand-new units. No core exchange or waiting period is required.
Do these turbos fit a right-hand-drive car?
No, these turbos do not fit right-hand-drive vehicles.
What other parts do I need to replace?
When fitting to a 135i, 535i, X6, 740i, 1M Coupé or Z4, the upper rear coolant pipe (part no. 11537558902) and the turbo outlet pipe (part no. 11657556551) must be replaced to allow the rear turbo to fit. An aftermarket Charge Pipe with a Blow-Off Valve is strongly recommended. The oil supply hoses, the oil filter and the engine oil MUST be replaced to retain the warranty, and the run-in procedure must be followed.
