---
product_id: 30293480
title: "Cs-Rk3 3X9-Sp Disc Hub, 32H - Black - HKF3K.BCS0.E00.BX"
brand: "sturmey archer"
price: "C$15853"
currency: NIO
in_stock: true
reviews_count: 3
category: "Sturmey Archer"
url: https://www.desertcart.ni/products/30293480-cs-rk3-3x9-sp-disc-hub-32h-black-hkf3k-bcs0
store_origin: NI
region: Nicaragua
---

# 32-hole, 135mm rear axle spacing 3-speed internal gear hub 6061 aluminum hub shell Cs-Rk3 3X9-Sp Disc Hub, 32H - Black - HKF3K.BCS0.E00.BX

**Brand:** sturmey archer
**Price:** C$15853
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift your ride into the future with Sturmey Archer’s powerhouse hub!

## Quick Answers

- **What is this?** Cs-Rk3 3X9-Sp Disc Hub, 32H - Black - HKF3K.BCS0.E00.BX by sturmey archer
- **How much does it cost?** C$15853 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/30293480-cs-rk3-3x9-sp-disc-hub-32h-black-hkf3k-bcs0)

## Best For

- sturmey archer enthusiasts

## Why This Product

- Trusted sturmey archer brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Secure 135mm Bolted Axle:** Enhanced stability for heavy-duty use, perfect for child carriers and trail adventures
- • **HyperGlide Cassette Ready:** Supports 8-11 speed HG splined freehub for smooth integration with high-end drivetrains
- • **Robust 6061 Aluminum Shell:** Lightweight yet durable design built to withstand rugged trail demands
- • **Seamless 3-Speed Internal Gearing:** Effortless shifting with a 177% gear ratio range for versatile terrain mastery
- • **Universal 6-Bolt Disc Brake Compatibility:** Optimized for modern disc brakes ensuring superior stopping power

## Overview

The Sturmey Archer CS-RK3 3X9-Sp Disc Hub is a premium rear hub featuring a 3-speed internal gear system with a 177% gear ratio range, housed in a durable 6061 aluminum shell. Designed for 32-spoke wheels with 135mm rear axle spacing, it supports modern 6-bolt disc brakes and HG-splined 8-11 speed cassettes, delivering a versatile, reliable, and smooth shifting experience ideal for trail and hybrid bikes.

## Description

Internal gear 3-speed hub with HG-splined 8-11sp freehub body for use with any IS 6-bolt disc brake . 6061 aluminum hub shell with 13/32" slotted solid axle (179mm overall axle length) . Gear ratio range of 177% (33% each step) . Cassette and shifters sold separately. Special shifter setup required: internal 3sp is shifted via a standard Mountain 3sp front derailleur shifter. Sturmey Archer shifters not compatible with this hubItem Specifications: Number of Holes: 32, Front or Rear?: Rear (3sp), Color: Black, Model Name: CS-RK3, Rear Axle Spacing: 13/32"x135 Nutted, Spoke: J-Bend, Brake Type: 6-Bolt, Weight: 1155g,

Review: It's a great addition to my trail bike - OK, first off, the photos are the chrome version I purchased before. I haven't built up the black one yet, but they are identical except for the hub exterior color. It takes some getting used to when shifting since the internal gears require you to let off the pressure from the pedals so it can shift - as opposed to the external cassette that works like any cassette with a derailleur requiring pedaling to move the chain. My bike is now an 81-speed (3*9 rear * 3 front = 81) and practically speaking that is about 60 more than necessary. Why did I do it? Because I could. I also could have put a single chain wheel crank on the front and dispensed with the front derailleur altogether and still had a 27 speed. That would also make the handlebar less crowded. In addition, throughout the middle gear range I'm sure there are some gears that have the same gear ratio, or close enough as to be negligibly different. But in the end I have a super high and a super low gear and it's fun. The internal gearing works exactly the same as the old Sturmey-Archer 3-speeds I remember as a kid, and are still around. I don't think an index shifter will work with it, so I got a SRAM twist-grip friction shifter and it works just fine. I used the twist grip to save some room on the handlebar since I still have the other 3-speed shifter on that same side. I still had to buy a longer set of flat bars for everything to fit comfortably. I broke the new 3-speed brake/shifter that was a matching set with the 9-speed for the other side. it wasn't defective, I just failed to notice the clashing of it and the twist grip housing and forced it too much. As a result, I put the old one back on and you can see my un-matched shifters. I bought a new matching 3-speed brake/shifter but have yet to install it. The other thing to remember is since this has internal gears the axle is bolted - no quick release. For me that actually is a good thing because I also use this bike to pull a child carrier and I can loosen the nut opposite the gear side (which is where the carrier must connect anyway) and the bolt on the other side keeps the axle in position. Unlike a quick release axle that requires the skewer to be completely removed so it will pass through the carrier connector that fits over the end of the axle. It's a little harder to line up the wheel with the carrier hanging there in that case, so with the bolted axle that is not a worry. However, if you get a flat on the rear you must un-do the coupler of the cable for the internal gears to get the wheel off. If installed properly, you will need two pair of plyers to un-do it. You also need a wrench for the axle nuts. Then of course, you need to re-adjust the three-speed coupler once you put it all back together. The bottom line there is to remember to carry enough tools with you to fix a flat. Now I haven't talked about the ins and outs of getting this to a working level like wheel building, routing of the gear cables, and other items, but those are things to address if you are thinking of outfitting your bike with this. I had a great time getting my bike up and running with this, converting it from a 21-speed, and look forward to installing the other one on my tandem.
Review: Works with HyperGlide 10 Speed Cassette - I wanted an IGH that works with new XT Mountain components and that's just what I got! Before building the hub into a wheel I mounted a new Shimano XT M771-10 (11 to 34 tooth) Cassette to make sure it would fit. Coupled with M-780 rear derailleur and M-780 triple crank up front = 90 Speed drivetrain for my custom hybrid Giant XTC (a 69er). Everything fits together and travels the entire cassette range smoothly. It may seem like overkill to add the SA CS-SK3 to the XT 30 Speed mountain setup. Here's why I did it: I get a 10-speed gear ratio shift using the 24-32-42 XT chain rings. This effectively gives me 5 chain rings - one for underdrive and one for overdrive. The low gears add 6 lower steps for grinding out long upgrades while the overdrive adds to pavement speed potential. Sturmey Archer was contacted by guys on mountain bike forum a year or so back and the rep said these are totally good for mountain drive trains. After more prodding he refused to budge and said they can take whatever you throw at it in the 11-34 rear teeth range with any road or mountain chain ring, even a 22, etc. SA should advertise that this accepts some 10 speed cassettes - this was the deciding factor in my purchase.

## Features

- Number of Holes: 32
- Front or Rear?: Rear (3sp)
- Color: Black
- Model Name: CS-RK3
- Rear Axle Spacing: 13/32"x135 Nutted

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007X4FPRO |
| Best Sellers Rank | #637,202 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #672 in Bike Hubs |
| Brand Name | Sturmey Archer |
| Color | Black |
| Customer Reviews | 5.0 5.0 out of 5 stars (4) |
| Date First Available | April 24, 2012 |
| Included Components | Rear Hub |
| Item Package Dimensions L x W x H | 8 x 8 x 8 inches |
| Item Weight | 1.16 Kilograms |
| Manufacturer | Sturmey Archer |
| Material | Multi |
| Model Name | HKS3CQ.MASS.TSO.BX |
| Package Weight | 3.6 Pounds |
| Part Number | HKF3K.BCS0.E00.BX |
| Style | Does Not Apply |
| Suggested Users | unisex-adult |
| Warranty Description | Limited Warranty |

## Images

![Cs-Rk3 3X9-Sp Disc Hub, 32H - Black - HKF3K.BCS0.E00.BX - Image 1](https://m.media-amazon.com/images/I/414EZbxCYTL.jpg)

## Questions & Answers

**Q: 3 speed hub shifter included ?**
A: No. You can use any 3-speed click-shift shifter for a typical front derailleur, or  you can buy the shifter separately.

**Q: For the seller only: what model number is this igh ?  it doesn't seem to be specified in the listing.**
A: cs-rk3

**Q: Hello. How many spoke hole on this hub?**
A: 32 hole hub

## Customer Reviews

### ⭐⭐⭐⭐⭐ It's a great addition to my trail bike
*by D***E on June 30, 2023*

OK, first off, the photos are the chrome version I purchased before. I haven't built up the black one yet, but they are identical except for the hub exterior color. It takes some getting used to when shifting since the internal gears require you to let off the pressure from the pedals so it can shift - as opposed to the external cassette that works like any cassette with a derailleur requiring pedaling to move the chain. My bike is now an 81-speed (3*9 rear * 3 front = 81) and practically speaking that is about 60 more than necessary. Why did I do it? Because I could. I also could have put a single chain wheel crank on the front and dispensed with the front derailleur altogether and still had a 27 speed. That would also make the handlebar less crowded. In addition, throughout the middle gear range I'm sure there are some gears that have the same gear ratio, or close enough as to be negligibly different. But in the end I have a super high and a super low gear and it's fun. The internal gearing works exactly the same as the old Sturmey-Archer 3-speeds I remember as a kid, and are still around. I don't think an index shifter will work with it, so I got a SRAM twist-grip friction shifter and it works just fine. I used the twist grip to save some room on the handlebar since I still have the other 3-speed shifter on that same side. I still had to buy a longer set of flat bars for everything to fit comfortably. I broke the new 3-speed brake/shifter that was a matching set with the 9-speed for the other side. it wasn't defective, I just failed to notice the clashing of it and the twist grip housing and forced it too much. As a result, I put the old one back on and you can see my un-matched shifters. I bought a new matching 3-speed brake/shifter but have yet to install it. The other thing to remember is since this has internal gears the axle is bolted - no quick release. For me that actually is a good thing because I also use this bike to pull a child carrier and I can loosen the nut opposite the gear side (which is where the carrier must connect anyway) and the bolt on the other side keeps the axle in position. Unlike a quick release axle that requires the skewer to be completely removed so it will pass through the carrier connector that fits over the end of the axle. It's a little harder to line up the wheel with the carrier hanging there in that case, so with the bolted axle that is not a worry. However, if you get a flat on the rear you must un-do the coupler of the cable for the internal gears to get the wheel off. If installed properly, you will need two pair of plyers to un-do it. You also need a wrench for the axle nuts. Then of course, you need to re-adjust the three-speed coupler once you put it all back together. The bottom line there is to remember to carry enough tools with you to fix a flat. Now I haven't talked about the ins and outs of getting this to a working level like wheel building, routing of the gear cables, and other items, but those are things to address if you are thinking of outfitting your bike with this. I had a great time getting my bike up and running with this, converting it from a 21-speed, and look forward to installing the other one on my tandem.

### ⭐⭐⭐⭐⭐ Works with HyperGlide 10 Speed Cassette
*by R***T on October 26, 2013*

I wanted an IGH that works with new XT Mountain components and that's just what I got! Before building the hub into a wheel I mounted a new Shimano XT M771-10 (11 to 34 tooth) Cassette to make sure it would fit. Coupled with M-780 rear derailleur and M-780 triple crank up front = 90 Speed drivetrain for my custom hybrid Giant XTC (a 69er). Everything fits together and travels the entire cassette range smoothly. It may seem like overkill to add the SA CS-SK3 to the XT 30 Speed mountain setup. Here's why I did it: I get a 10-speed gear ratio shift using the 24-32-42 XT chain rings. This effectively gives me 5 chain rings - one for underdrive and one for overdrive. The low gears add 6 lower steps for grinding out long upgrades while the overdrive adds to pavement speed potential. Sturmey Archer was contacted by guys on mountain bike forum a year or so back and the rep said these are totally good for mountain drive trains. After more prodding he refused to budge and said they can take whatever you throw at it in the 11-34 rear teeth range with any road or mountain chain ring, even a 22, etc. SA should advertise that this accepts some 10 speed cassettes - this was the deciding factor in my purchase.

### ⭐⭐⭐⭐⭐ Nice product.
*by C***D on April 11, 2020*

Just what I was looking for.

## Frequently Bought Together

- Sturmey Archer Cs-Rk3 3X9-Sp Disc Hub, 32H - Black - HKF3K.BCS0.E00.BX
- Sturmey Archer Cable and Housing for 3 Speed Trigger
- Sunlite Sturmey Archer 3-Speed Cable

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-06*