NITTO NJ-89 Girls Keirin Stem Black


Size Size: 70mm


Many companies are shifting their manufacturing bases out of Japan in order to become more profitable, but from the standpoint of creativity, I think it is very important to always have a manufacturing site close to the idea in order to create rich products. There are people who still want to make things in this tiny country called Japan.

NITTO / NITTO is such a manufacturer that Japan can be proud of in the world. Based on traditional techniques, NITTO uses metal processing and welding to produce excellent products such as bicycle handles, stems, and carriers that cyclists can use with peace of mind for many years to comE

The NJ-89 Ahead Stem, a stem developed for girls' keirin, has been specially ordered in a black color.

The NJ-89 is the only NJS certified stem for the Girls' Keirin, where the use of an Ahead stem is allowed, unlike the Men's Keirin where the use of an Ahead stem is allowed.

The NJ-89 stem is made of forged aluminum for high strength, and although it is designed for girls' keirin, it is of course safe for use by men as well.

It is the perfect choice for those who want to build a classic track bike with an a-head stem. We also recommend combining it with flat bars for a track rocross assembly.

No NJS markings.


Material Aluminum
Bar Clamp Diameter 25.4mm
Post Clamp Diameter 28.6mm (oversize) / 1" shim included
Angle 73° (with 1" shim)

  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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