Shimano SM-BB71-41A bottom bracket, 89.5/92 mm, Press Fit, Hollowtech II, mtb
Press-Fit BB use 24 mm axle and bearings, because 24 mm diameter axle and
bearings offers the best balance of rotating performance, stiffness, strength, sealing, weight, for press-Fit type as well.
Product features
- Use: MTB
- Model: SM-BB71-41A
- BB-Type: Press Fit (41x24mm)
- Press-Fit BB shell width: 89.5/92mm
- Shell diameter: 41mm
Compatibility
- Saint FC-M820
- XT FC-M780 / FC-M782 / FC-M785
- XT Trekking FC-T780
- SLX FC-M670 / FC-M672 / FC-M675 / FC-M677
- ZEE FC-M640
- Deore FC-M610 / FC-M612 / FC-M615 / FC-M622 / FC-M625
Material
- Resin
Weight
- 71g
Scope of delivery
- Shimano Hollowtech II Press Fit Bottom Bracket SM-BB71-41A
HOLLOWTECH II Technology
The concept of HOLLOWTECH II technology is focused on producing a superior crankset which will maximize a rider’s power transfer. The rigidity of the crankset ensures pedaling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances over which the rider needs to pedal more. Naturally, SHIMANO strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. HOLLOWTECH technology is an ultra-lightweight hollow crankarm created by SHIMANO with the company’s own proprietary forging technology that also maintains rigidity. The addition of HOLLOWTECH II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedaling stability, allowing for more efficient power transfer.
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Compatible with SLX and XT cranks
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Necessary to use the TL-BB12 press for mounting
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| Suitability | MTB |
| Mount type | BB86-89.5-92 Press Fit |
| Axis type for crankset | HollowTech II (HTII) (⌀ - 24 mm) |
| Frame width | 89.5 mm, 92 mm |
| The diameter of the center of the frame | 41 mm |
| The diameter of the crank axis | 24 mm |
| Mounting type | Press Fit |
| Material | aluminium |
| product ID | 3566 |
WARNING
For information on installing, adjusting, replacing and maintaining products that are not found in the user's manual, consult the place of purchase or a distributor. A dealer's manual for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to carefully read this "user's manual" before use, follow it for correct use, and save it so that you can refer back to it at any time.
The following instructions must always be followed in order to prevent personal injury and physical damage to equipment and the environment. The instructions are classified according to the degree of danger or damage that may occur if the product is used incorrectly.
DANGER - Failure to follow the instructions will result in death or serious injury.
WARNING - Failure to follow the instructions could result in death or serious injury.
CAUTION - Failure to follow the instructions could result in personal injury or physical damage to equipment and the environment.
WARNING:
Do not disassemble or modify the product. This may cause the product to malfunction, you may fall unexpectedly and be seriously injured.
Before riding your bicycle, check that the crank arms are not cracked. If there are cracks, the crank arm may break and you may fall off the bicycle.
Be careful not to get parts of your clothing caught in the chain while riding. Otherwise, you may fall off the bicycle.
CAUTION:
Be careful not to touch the teeth of the sprockets. There is a risk of injury.
All the answers to questions about delivery, payment, security, returns, warranty and much else.
