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Shimano RT66 6 Bolt Rotor

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SM-RT66 rotors give excellent performance using the 6-bolt international standard mounting system.

SM-RT66 rotors give excellent performance using the 6-bolt international standard mounting system.

Top Features:

  • 203mm
  • 6 bolt rotor
  • Precision cut and drilled stainless steel braking surface
  • Improved pad clearing in muddy conditions while aiding cooling under high load

Product Data

  • Brake Type: Hydraulic Disc Brake
  • Commuter: Yes
  • Touring: Yes
  • Cyclocross: Yes
  • Time Trial: Yes
  • Road: Yes
  • MTB: Yes

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Description

Stainless steel braking surface improves pad clearing in muddy conditions while aiding cooling under high load.

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Returns

We will happily refund any item purchased on Wiggle if returned to us within 365 days; excluding Wiggle gift vouchers, nutrition and customised products, except when faulty.

Please note: Bikes and other bulky items cannot be returned using our local returns service (where applicable). Please contact us and we can arrange to collect these from you using our discounted courier rates. There is a fee for all collections, except for faulty products.

Returned goods must be unused and supplied with their original packaging, unless the goods are faulty. Wiggle will pay the return postage costs for any faulty items.
More information on Wiggle's return policy

Customer Reviews

Shimano RT66 6 Bolt Rotor is rated 4.5 out of 5 by 35.
Rated 5 out of 5 by Happychapi from Quality well priced product Great value brake rotor which is well constructed and offering good performance.at this price. Rotor required no truing and was perfect from the off. This was a direct same standard replacement for the previously OE installed rotor which was damaged by a rock.
Date published: 2020-12-09
Rated 4 out of 5 by titchy2 from Fit and forget Easy to fit good upgrade from smaller rotors. Massive difference in brake feel with this larger size
Date published: 2020-07-27
Rated 5 out of 5 by MikeInBE from Work as intended I use these on my gravel bike and I have never doubted them in the wet or dry. I have not used them on long steep descents so cannot speak to how they handle when they get hot.
Date published: 2020-02-07
Rated 1 out of 5 by Marcus10 from Poor Probably a faulty item,warped badly after 3 rides with no impacts in the canaries,maybe too much heat from aggressive braking
Date published: 2019-12-04
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Q & A

Does this come with the 6 mounting bolts?

Does this come with the 6 mounting bolts? Thank you in advance.
Asked by: MikeInBE
I just bought a pair of these rotors and they do come with mounting bolts.
Answered by: MikeInBE
Date published: 2020-10-16

Will this fit caliper M585 deore LX ?

Asked by: Leosweden
I can confirm Shimano's rotors are, to our knowledge, all molded to the same disk thickness, so this should fit your brakes without any issues.
Answered by: WiggleAndyE
Date published: 2014-06-16

Is this rotor compatible with the caliper BR-M495?

Asked by: LeoNova
yes - but i would upgrade your calipers to SLX...495`s are poor
Answered by: TokyoPaul
Date published: 2015-02-15

will this fit onto my GT Aggressor 2013 1.0?

I have upgraded my callipers to shimano deore hydraulics, which should handle the diameter. will these fit to the wheels that came with the bike, and will the frame handle the 180mm diameter? thanks, joe
Asked by: Joehay
yes - standard 6 bolt mount. You`ll need the adaptor for 18omm discs http://www.wiggle.co.uk/shimano-disc-brake-calliper-adapter/
Answered by: TokyoPaul
Date published: 2015-02-15

Will these work with TRP Spyre disc brakes?

Asked by: Peregrino
This will be compatible.
Answered by: WiggleSamB
Date published: 2018-03-30

Will I be able to fit these to my diamondback heist standard brake setup aslong as I buy the adapter?

Asked by: Nathg96
Yes, this will be compatible with your setup.
Answered by: WiggleDonat
Date published: 2018-05-14

For fully accuracy...the item is 180mm disc, but the picture is for a 160mm, am I right?

Asked by: CatalinIulian
That's correct, this is a stock image from Shimano for illustrative purposes.
Answered by: WiggleAndyE
Date published: 2016-11-04

Is this rotor compatible with TRP HYRD brakes?

Asked by: peetee
These should be suitable.
Answered by: WiggleMattS
Date published: 2015-06-09

I have Tektro HY/RD brakes

The rotors I have are 160 Will these 180 fit onto existing Tektro HY/RD
Asked by: Cornish1960
I can confirm that with the correct brake adapter they will fit without any issues.
Answered by: WiggleWarby
Date published: 2016-10-06

Compatibility

Think I need new rotors for my 2008 hayes stroker ryde brakes would these be compatible? If not can you recommend some that are.. ( 6 bolt )
Asked by: fatalan
Yes, will be compatible.
Answered by: WiggleDonatB
Date published: 2018-09-27
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Wiggle Ltd. 1000 Lakeside, Suite 310, Third Floor N E Wing, Portsmouth, Hampshire, PO6 3EN, United Kingdom

VAT No: GB 884 2571 94 | Company No: 02667809

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Privacy Policy | Cookie Policy | Terms & conditions

© Wiggle Ltd. 2021.

Wiggle Ltd. 1000 Lakeside, Suite 310, Third Floor N E Wing, Portsmouth, Hampshire, PO6 3EN, United Kingdom

VAT No: GB 884 2571 94 | Company No: 02667809

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