Wheels Manufacturing Outboard Bottom Bracket

The outboard bottom brackets from Wheels Manufacturing allow road cranksets with a 24/22 mm GXP axle to be fitted to frames with BB30A bottom bracket shells featuring a 42 mm press-fit depth and a width of 73 mm.

BB30A bottom bracket shells, asymmetrical

Unlike standard BB30 bottom bracket shells, the BB30A shells are asymmetrical. The press-fit depth of the bearings is 42 mm and the bottom bracket shell width is 73 mm. The drive side of the bottom bracket is narrower than the non-drive side. This mounting specification was developed by Cannondale and is only compatible with road bike cranksets. Therefore, BB30 cranksets or bottom brackets do not fit.

Sram GXP road bike axle system:

The SRAM GXP crankset system features different axle diameters. The outer diameter of the axle on the drive side is 24 mm and 22 mm on the left side. GXP-compatible bottom brackets are required for this.

Wheels Threaded Outboard:

Unlike other press-fit bottom brackets, the Wheels Manufacturing Outboard bottom bracket cups are bolted together. This has the major advantage that the bottom bracket cups, and therefore the bearings, sit very firmly and absolutely parallel within the frame. This reliably prevents the annoying and irritating creaking and grinding of the bearings in the frame. Even frames with slightly worn-out bottom bracket shells can often still be used with this system. This ensures a long service life for both the bottom bracket and the frame. The bottom bracket cups are made from high-strength aluminium.

Wheels Enduro ABEC3 ball bearings:

The Wheels Enduro ABEC3 ball bearings offer very high precision. The balls are twice as round as standard industrial bearings, with a roundness tolerance of 10 / 1,000,000. The ball material, 52100 high-carbon chrome alloy, is extremely robust and specially hardened. It is also polished to a high gloss.

Wheels Manufacturing Outboard Bottom Bracket Technology:

• Suitable for BB30A bottom bracket shells
• Press-fit diameter 42 mm, width 73 mm
• For 24/22 mm GXP crank axles: Sram and Truvativ road bike cranks only
• Application: Road
• 7075 aluminium bearing cups, forged and CNC-machined.
• Bottom bracket tool 44 mm with 16-tooth spline
• ABEC3 Enduro bearings
• Weight 153 grams

Wheels Outboard bottom bracket compatibility:

Compatible with Quarq power meters, SRAM and Truvativ GXP cranksets with a continuous 24–22 mm axle, road bikes only. The Hollowtech II bottom bracket tool, such as the TL-FC32 or TL-FC33, is required for installation.

Herstellerinformation: WHEELS MANUFACTURING, 475 Arthur Ave. #1, 80027 Louisville, Colorado, United States, https://wheelsmfg.com | EU contact: Tomeikerweg 31, 6161RB Geleen, Netherlands, https://tehava.com