Replace the existing "GXP" bearings on your Trek frame with "oversized" "net-molded carbon sockets." For replacing your existing bearings when running SRAM, Bontrager, and TruVativ GXP cranksets. Includes two (2) replacement CHROMIUM STEEL cartridge bearings and one (1) BB90/95® SPECIFIC drive side silicone seal, and one (1) non-drive side auxiliary seal (or you can re-use your existing stainless steel end cap on the non-drive side). Grade 10 steel ball bearings are matched with hardened chromium steel races. Packed with marine grade grease. Please note that this kit is specific to "GXP" cranksets and therefore includes the special non-drive side bearing with an extended inner race.
SPECIAL KIT FOR TREK BB90/95 FRAMES THAT HAVE "OVERSIZED" BEARING SOCKETS (Standard bearings fit too loosely).
--New CHROMIUM STEEL Bearings (one with special extended inner race)
BOTH BEARINGS HAVE SLIGHTLY LARGER OUTSIDE DIAMETERS THAN ORIGINAL BEARINGS (37.1mm).
Bearings are deep groove radial design.
--New Drive Side Silicone Seal
--New non-drive side silicone seal (or re-use your stainless steel end cap on the non-drive side if you prefer)
THE ABOVE KITS ARE FOR UPGRADING AN EXISTING
GXP (SRAM/TRUVATIV/BONTRAGER) CRANKSET ON THE FOLLOWING FRAMES:
TREK: MADONE, TOP FUEL CARBON, FUEL EX CARBON, REMEDY CARBON, CARBON HARDTAIL
GARY FISHER: SUPERFLY 100, CARBON ROAD FRAMES ...AND ANY OTHER FRAME USING TREK'S PROPRIETARY BB90 OR BB95 "NET MOLDED SOCKET" TECHNOLOGY (see product pictures for additional guidance).