JUST THE FACTS:
The BBInfinite DirectFit GXP BB386EVO Bottom Bracket module works with all Sram GXP road cranksets on the market, including but not limited to Sram, Cobb, and Truvativ. Every BBInfinite module ships with the special press tools and retaining compounds you need to get the job done correctly with ease and confidence. All you need is the bottom bracket press.
ABOUT OUR BEARING CHOICES:
Ceramitech Bearings: Our Si3n4 hybrid ceramic bearings feature ultra-spherical silicon nitride balls matched to SAE 52100 chrome steel bearing races that have been processed with additional heat treatment and polishing steps. The result is a hybrid-ceramic bearing that lasts longer than any steel bearing with spin performance no steel bearing can rival. We’re so confident in the durability of our Ceramitech bearings that we back them with a Lifetime Bearing Exchange warranty. These bearings feature mid-contact seals for extreme performance and endurance. Each bearing comes lubricated with Kluber Isoflex Topas NB52. Lifetime Warranty.
WS2 Coated Ceramitech Bearings: We took our amazing Ceramitech bearings and added an extremely durable, tungsten disulfide (WS2) coating that has a 0.03 coefficient of friction---which means it’s slicker than Teflon, graphite, and even molybdenum disulfide. WS2 has an affinity for oils and greases, which means it maintains a hydrodynamic layer of lubricant where it’s needed most. The result is astonishing spin performance and increased endurance. These bearings feature mid-contact seals for extreme performance and durability. Each bearing comes lubricated with Kluber Isoflex Topas NB52. Lifetime Warranty.
ABEC-7 Steel Bearings: Crafted from SAE 52100 chrome steel, our BBInfinite ABEC-7 (ISO 492, Class 4) bearings are so buttery that you’d have to buy our Ceramitechs to find anything better. These bearings feature mid-contact seals for extreme performance and durability. Each bearing comes lubricated with Kluber or Koyo. 1-Year Bearing Exchange Warranty.
MORE THAN EXTREME SPEED AND SILENCE:
BBInfinite DirectFit Gxp bottom brackets maintain optimal chain-lines for crisp, consistent shifting and drivetrain performance. Our BBInfinite OPD architecture freed us to delete superfluous wave washers and shims that pre-load bearings unnecessarily, causing drag and poor performance.
Our Gxp optimized design is set to the narrowest stance the crank set allows. This ensures that the interface between the non-drive crank arm and the spindle has the maximum amount of spline engagement.
POWER METER FRIENDLY
All BBInfinite DirectFit Gxp bottom bracket modules feature a flange-less drive side architecture for maximum clearance for power meter back-plates like those found on Quarq and SRM cranks. This flange-less feature is especially noticeable on non-power meter fitments with a typical 2-3mm of spindle showing. This is normal and optimal.
Check out all that room for your power meter!
WHY DO BBINFINITE BOTTOM BRACKETS SPIN LIKE CRAZY?:
Bicycle frame bottom bracket shells are notoriously misaligned, inconsistent, and out of round, and so it’s inadvisable to use the bike frame as the primary aligning member for bottom bracket bearings. Yet, that’s what our multi-piece bottom bracket competition does, and this explains why their systems frequently fail prematurely and creak.
A BBInfinite OPD (One-Piece-Design) bottom bracket module is a CNC precision-machined hub---like the front wheel hub on your bike---that you press into your frame. And just like your trouble-free wheel hub, BBInfinite's road bike bottom brackets have perfectly aligned bearings regardless of your frame’s BB shell alignment and tolerances. Perfectly aligned bearings are essential for thousands of miles of trouble-free use and extreme spin performance.
WHAT KEEPS BBINFINITE BOTTOM BRACKETS FROM CREAKING?
BBInfinite OPD is the answer for creaking bottom bracket problems as well. Pedaling forces conspire to lever, and rock, and eventually work multi-piece systems loose. The unitized nature of BBInfinite OPD cancels these forces out entirely, which means creaking has no place to start in the first place. It really is that simple.
INSTALLATION IS A SNAP WITH BBINFINITE:
Every BBInfinite module ships with the special press tools, hardware, instructions, and the retaining compound you need to get the job done correctly with ease and confidence. All you need is the press for this road bike bottom bracket. If you need a press, check out our Master Tool Press.
WS2: 106g | CERAMITECH: 107g | ABEC-7 SS: 109g
Frame Width: 86.5mm
Frame Diameter: 46mm
Spindle Diameter: 24/22mm
Bearing Size: 6805