You may be interested in the Masata BMW N54 E82 E90 E92 Silicone Inlets (1M, 135i, 335i, 535i & Z4) as an alternative.
These high quality BMS N54 silicone inlets replace your flimsy and restrictive plastic N54 BMW inlets reducing restriction and dramatically improving air flow, top end boost and performance. Includes all required hardware and is compatible with both factory style diverter valves and blow off valve kits. Available in 1.75" inlets for factory turbos or 2" inlets for hybrid and aftermarket turbos. Compatible with BMS DCI and all other N54 intake systems. The BMS N54 Dual Cone Intake dramatically improves airflow and enhances sound when combine with this kit.
• Huge 30-50whp top end power gains
• Replaces your restrictive factory intake system
• Retains OEM engine bay look
• Durable high temperature reinforced silicone for long life
• Compatible with both RHD and LHD vehicles
• Includes required hardware
BMW 1 Series
• 2008-2012 N54 E82 E88 BMW 135i/135is/1M
BMW 3 Series
• 2006-2010 N54 E90/E91/E93 BMW 335i/ 335iX
• 2011-2012 N54 E92 BMW 335is
BMW 5 Series
• 2007-2010 N54 E60/E61 BMW 535i/535iX
BMW Z Series
• 2009-2015 N54 E89 BMW Z4 35i
BMS034 (1.75")
BMS035 (2")
Manufactured by
BMS