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Enduro Bearings · Bottom bracket bearing
A smoother spin for tired 24 mm bottom brackets.
$29.99
PriceIn stock, ready to ship
A 24 x 37 x 7 mm ABEC-5 bearing from Enduro, most often used to rebuild Shimano-style external cup bottom brackets for 24 mm spindle cranks. Mixed seals keep grit out while keeping drag low.
Sold by Ashburton Cycles
Verified store
Price
$29.99
Size
24 x 37 x 7 mm
Precision
ABEC-5, C3 clearance
Seals
Grey LLU outside, black LLB inside
The Enduro MR 2437 is a 24 x 37 x 7 mm radial bearing, and its most common job is replacing the bearings in Shimano-style external cup bottom brackets that run a 24 mm spindle. It is also used in BB86, BB92 and adaptor setups built around the same bearing.
It is an ABEC-5 bearing with 52100 high-carbon chromium steel races, Grade 5 balls and C3 clearance, filled 90% with Mobil XHP 222 waterproof grease. The clever part is the seal pairing: a grey LLU seal faces outward to fight water and dirt, while a lighter black LLB seal faces inward so the bearing spins freely.
If your bottom bracket feels gritty or has play but the cups are still in good shape, a pair of these brings it back to life for much less than a new unit.
Riders and mechanics rebuilding 24 mm external or press-fit bottom brackets.
Common BB size
24 x 37 x 7 mm, the standard 24 mm spindle bearing.
ABEC-5
Grade 5 balls and C3 clearance for a smooth spin.
Smart sealing
Grey LLU outside, black LLB inside.
Waterproof grease
90% fill of Mobil XHP 222.
Every detail as listed by the manufacturer.
Enduro Bearings makes cartridge bearings designed specifically for bicycles, from hubs and bottom brackets to headsets and suspension pivots. The range covers high-carbon chromium steel, 440C stainless steel and ceramic-hybrid bearings, all built with deep-groove races and dual-lip labyrinth seals to keep grease in and grime out.
Enduro Bearings · Bottom bracket bearing
A smoother spin for tired 24 mm bottom brackets.
$29.99
In stockSize
24 x 37 x 7 mm
Precision
ABEC-5, C3 clearance
Seals
Grey LLU outside, black LLB inside
Fits
24 mm Shimano-style BB cups
A 24 x 37 x 7 mm ABEC-5 bearing from Enduro, most often used to rebuild Shimano-style external cup bottom brackets for 24 mm spindle cranks. Mixed seals keep grit out while keeping drag low.
The Enduro MR 2437 is a 24 x 37 x 7 mm radial bearing, and its most common job is replacing the bearings in Shimano-style external cup bottom brackets that run a 24 mm spindle. It is also used in BB86, BB92 and adaptor setups built around the same bearing.
It is an ABEC-5 bearing with 52100 high-carbon chromium steel races, Grade 5 balls and C3 clearance, filled 90% with Mobil XHP 222 waterproof grease. The clever part is the seal pairing: a grey LLU seal faces outward to fight water and dirt, while a lighter black LLB seal faces inward so the bearing spins freely.
If your bottom bracket feels gritty or has play but the cups are still in good shape, a pair of these brings it back to life for much less than a new unit.
Riders and mechanics rebuilding 24 mm external or press-fit bottom brackets.
Common BB size
24 x 37 x 7 mm, the standard 24 mm spindle bearing.
ABEC-5
Grade 5 balls and C3 clearance for a smooth spin.
Smart sealing
Grey LLU outside, black LLB inside.
Waterproof grease
90% fill of Mobil XHP 222.