BULL BOOST PERFORMANCE Billet Short Shifter Box for BMW N20 N54 N55 135i 335i Getrag & ZF 5/6-Speed Transmissions – Black

Part Number: 723098227851

Upgrade your BMW’s driving experience with the Bull Boost Performance Billet Short Shifter Box, engineered to deliver shorter, more precise shift engagement with improved driver feedback and reduced shift play. Designed for a wide range of BMW Getrag and ZF 5-speed and 6-speed manual transmission applications, this performance shifter assembly is ideal for street, track, drift, and performance driving enthusiasts.

Precision CNC-machined from lightweight billet aluminum, this shifter box combines strength, durability, and refined shifting performance in a compact package weighing approximately 2.2 lbs. The short-throw geometry significantly reduces shift travel while maintaining the factory linkage system completely unmodified.

Integrated adjustable gear stops help eliminate excessive side-to-side movement for tighter, more accurate gear changes. The included self-centering spring mechanism improves shifter feel and responsiveness, especially in vehicles with worn or weakened factory transmission return springs.

Built for drivers seeking a more connected and aggressive shifting experience, this short shifter is an excellent upgrade for naturally aspirated and turbocharged BMW platforms alike.

Key Features & Specifications:

• Precision CNC-machined billet aluminum construction
• Durable black anodized finish
• Short-throw shift design for quicker gear engagement
• Approximate weight: 2.2 lbs
• Adjustable gear stops reduce lateral shifter play
• Factory linkage system remains unmodified
• Self-centering spring mechanism included
• Compatible with Getrag and ZF 5-speed / 6-speed H-pattern gearboxes
• Precision TIG-assembled and high-quality workmanship

Performance Benefits:

• Shorter and more precise shift travel
• Improved driver feedback and gear engagement
• Reduced side-to-side shifter movement
• Enhanced shifting performance during aggressive driving
• Improved transmission feel and responsiveness

Recommended Supporting Modifications:

• Stiffer engine mounts
• Upgraded transmission mounts

Vehicle Fitment (Partial List):

BMW 1 Series

• BMW 135i E82/E88 N54/N55 3.0L (2008–2013)
• BMW 128i E82/E88 N52 3.0L (2008–2013)
• BMW 1M Coupe E82 N54 3.0L (2011)

BMW 3 Series

• BMW 325i / 328i / 330i E90/E91/E92/E93 (2006–2013)
• BMW 335i / 335xi E90/E92/E93 N54/N55 3.0L (2007–2013)
• BMW M3 E90/E92/E93 S65 4.0L (2008–2013)

BMW 5 Series

• BMW E34 / E39 / E60 5-Series Manual Transmission Models
• BMW 535i / 535xi E60 N54/N55 3.0L (2008–2010)
• BMW M5 E34 / E39 / E60 Manual Models

BMW 6 Series

• BMW 645Ci / 650i E63/E64 (2004–2010)
• BMW M6 E63/E64 (2006–2010)

BMW X Series

• BMW X1 E84 N20/N55 (2012–2015)
• BMW X3 E83 Manual Transmission Models
• BMW X5 E53 Manual Transmission Models

Additional Compatibility:

• BMW E10 / E12 / E21 / E23 / E24 / E28 / E30 / E31 / E32 / E36 / E46 / E52 / E53 / E60 chassis manual transmission applications compatible with Getrag or ZF H-pattern gearboxes.

Installation Note:
Professional installation is recommended. Proper adjustment of gear stops and linkage alignment is important for optimal shifting performance.

Warranty Notice:
All warranties, claims, and product-related issues must be handled directly through BULL BOOST PERFORMANCE.