Shimano RT-CL900 Lock Externo Disc Brake Silver 140 mm
Quieter control in any terrain. When developing the new brake disc, the goal was to prevent heat-induced deformation. The result is incredibly quiet braking performance without sacrificing weight or heat dissipation.
Quieter control in any terrain. When developing the new brake disc, the goal was to prevent heat-induced deformation. The result is incredibly quiet braking performance without sacrificing weight or heat dissipation.
Quieter control in any terrain. When developing the new brake disc, the goal was to prevent heat-induced deformation. The result is incredibly quiet braking performance without sacrificing weight or heat dissipation.
Quieter control in any terrain. When developing the new brake disc, the goal was to prevent heat-induced deformation. The result is incredibly quiet braking performance without sacrificing weight or heat dissipation.
in 34 offers
The lowest price for Shimano RT-CL900 Lock Externo Disc Brake Silver 140 mm right now is $74.10 at Lordgun.com.au, compared across 24 retailers.
The all-time low was $60.39 on 29 June 2025 — today's price is 23% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 6 Oct 2026.
Last updated at 06/10/2026 14:23:41
Shimano RT-CL900 5.5 inches (140 mm) Locking Ring (Outer Serration) IRTCL900SSE Medium
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano RT-CL900 Ice Technologies Freeza Centerlock disc brake rotor (External Lock ring) Diameter 140 mm
Next-day delivery $40.57
Shimano RT-CL900 Dura-Ace Ice-Tech Centerlock Disc Rotor
Delivery between 9–16 Oct $10
Shimano (Cycling) Rt-cl900 Brake Disc 140mm Centerlock Int (Irtcl900ssi)
Delivery between 13–15 Oct $90.58
Shimano Dura-Ace RT-CL900 Internal Serration Centrelock Disc Brake Rotor
Delivery between Thu – Tue $9.90
SHIMANO - Rotor RT-CL900 Ice Freeza Dura-Ace Black/Grey 140mm Centerlock
Delivery $50
Shimano RT-CL900 ICE TECH Center Lock Disc Rotor | DURA-ACE | CCACHE 140mm - External Serration
Delivery between Thu – Mon $9.99
Shimano Dura-ace Rt-cl900 Internal Serration Centrelock Disc Brake
Delivery $9.90
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano Dura-Ace RT-CL900 Internal Serration Centrelock Disc Brake Rotor
Delivery between Thu – Tue $9.90
Shimano Dura-Ace CL900 Disc Center Lock external Brake Disc - 140mm
Delivery $65.99
originally posted on biketart.com
Brilliant discs! Saw these fitted to the EF Education pro tour bikes and immediately wanted to buy them. Bike Tart had them at an amazing price and purchased on their site. Very quick delivery, fitted and first ride out noticed the difference in braking response. Highly recommend the discs and Bike Tart
originally posted on bikeinn.com
No issues so far with the quality of the product.The only issue would be with the value for money, because the only benefit I see with going with RT-CL900 over the RT-CL800 is aesthetics (meaning the "black" color).I will definitely buy the RT-CL800 next time because I see no value in paying extra for some black paint.Note: If you want to save some weight, there are other options.
originally posted on backcountry.com
Upgraded from the older ultegra 11 speed disc rotors, which would produce the annoying rubbing/ting/clicking sound after extensive brake use during descend or riding on hoods due to heat deformation. This new rotor has solved this problem finally at least for me.
| Bicycle Type | Road Bike |
| Brake Type | Disc brake |
| Groupset Compatibility | XTR-level, Dura-Ace |
| Size | 140mm |
| Weight | 96 g |
Shimano RT-CL900 5.5 inches (140 mm) Locking Ring (Outer Serration) IRTCL900SSE Medium
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano RT-CL900 Ice Technologies Freeza Centerlock disc brake rotor (External Lock ring) Diameter 140 mm
Next-day delivery $40.57
Shimano RT-CL900 Dura-Ace Ice-Tech Centerlock Disc Rotor
Delivery between 9–16 Oct $10
Shimano (Cycling) Rt-cl900 Brake Disc 140mm Centerlock Int (Irtcl900ssi)
Delivery between 13–15 Oct $90.58
Shimano Dura-Ace RT-CL900 Internal Serration Centrelock Disc Brake Rotor
Delivery between Thu – Tue $9.90
Brilliant discs! Saw these fitted to the EF Education pro tour bikes and immediately wanted to buy them. Bike Tart had them at an amazing price and purchased on their site. Very quick delivery, fitted and first ride out noticed the difference in braking response. Highly recommend the discs and Bike Tart
No issues so far with the quality of the product.The only issue would be with the value for money, because the only benefit I see with going with RT-CL900 over the RT-CL800 is aesthetics (meaning the "black" color).I will definitely buy the RT-CL800 next time because I see no value in paying extra for some black paint.Note: If you want to save some weight, there are other options.
Upgraded from the older ultegra 11 speed disc rotors, which would produce the annoying rubbing/ting/clicking sound after extensive brake use during descend or riding on hoods due to heat deformation. This new rotor has solved this problem finally at least for me.
Look good, easy to fit and performance faultless so far. I’ve not used for any rides which require significant braking (e.g alpine descents) but have been great for general riding and racing.Price at Bike Tart was market leading.
Works well, looks sharp. Be sure to bed them in first as with all rotors. They come with internal lockrings, so make sure your wheel has space for those, or you'll need to get external lockrings.
After a few weeks of riding, I have no complaints. The disks required only minimal bedding in before having full stopping power. Appear to have reduced squealing compared to the previous RT-MT900. Cannot comment on any fade under high temperate, but the MT-900 did not suffer so assume this model will be as good or better
One of the most reliable rotor out in the market. Would really recommend to use for long distance. It's really worth and the grip is good even during raining days.
Really like these rotors. They look great but the real deal is how they feel going down steep runs. The original rotors felt weak but these give the control I need because I am a larger male and bomb the downhills. Do yourself a favor and upgrade to a rotor you can trust.
There is just something about the Dura-Ace rotors that not only are light, but they look so much etter than the Ultegra. These keep my 35mph decents in check and I have no second thoughts with these at 270 lbs. to make sure that I can stop. Think Onyx Summit desent in Big Bear, CA.
Great product at a good price with super quick delivery. Highly recommended😁
| Bicycle Type | Road Bike |
| Brake Type | Disc brake |
| Groupset Compatibility | XTR-level, Dura-Ace |
| Size | 140mm |
| Weight | 96 g |
