ASTRAL CYCLING Backbone Rim

ASTRAL CYCLINGSKU: 48104-28H

Size: 650b
Hole: 28H

Description

The Backbone is a bomber

The Backbone is an extremely rugged 27.5" mountain bike rim with a particularly wide internal width of 32mm. Like other models where durability is important, it uses an asymmetrical rim design that improves spoke tension balance by up to 30%, increasing wheel stiffness, strength, and longevity.

For general trail use, the rim profile of this backbone is interpreted as the most reliable and balanced construction, especially with the 32mm inner width, which makes it compatible with many trail tires.

[SPEC]

Material : Aluminum Aluminum
Size : 650b 650b
ETRTO : 584 584
Hole : 28H, 32H 28H, 32H
Height : 20.0mm 20.0mm
Width : Inner 32.0mm, Outer 36.0mm Inner 32.0mm, Outer 36.0mm
Optimal Tire Width : 55mm - 76mm 55mm - 76mm
Tire Interface : Clincher / Tubeless Ready Clincher / Tubeless Ready
Weight : 535g 535g

Disc Brake Only

[SIZE]

ERD : 561.5mm 561.5mm
Spoke Bed Diameter : 559mm 559mm
Max Tension : 130kgf 130kgf
  1. We ship within 1-2 business days after receiving your order (payment). (Basically, orders placed before 12:00 p.m. are shipped the same day.)
  2. Messenger delivery is available within Nagoya City only.
  3. We ship every day from Monday to Sunday, except on temporary holidays.
  4. Available delivery areas: All over Japan and the world.
  5. Please note that delivery may be delayed due to credit card processing status. If you would like to specify the delivery date and time, please fill in your request in the additional information in the shopping cart.
  6. The product will be shipped from Circles.
  7. Please contact the shipping company in case of damage or loss during shipping.

Regarding the delivery of complete bikes

  • Please note that a separate shipping fee of 9,900 yen (tax included) will be charged for shipping complete bikes. (However, an additional fee will be charged for delivery to Okinawa and remote islands.)
  • After receiving your order, we will do a final check and ship complete bikes, but it may take 1-2 weeks. Please understand.
  • We will send the bike with some parts removed for packing. We strongly recommend that you have your bicycle assembled at your nearest bicycle store.
  • We will inform you of the delivery date and other details by e-mail.
  • We apologize for any sales discrepancies at the store.

Regarding the delivery of frame sets

  • Nationwide flat-rate shipping: 5,500 yen (tax included) (However, an additional fee will be charged for delivery to Okinawa and remote islands.)
  • We will inform you of the delivery date and other details by e-mail.
  • We will provide the pre-treatment of facing and tapping for the frame sets purchased at our store as a service. We will inform you separately after purchase.
  • We can also install a headset and BB for a fee, so please feel free to contact us.

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