⚙️ Shift into the fast lane with Sunrace precision!
The Sunrace CSR63 is a lightweight, 7-speed bicycle cassette featuring a durable nickel-plated finish and a versatile 12-24 tooth gear range. Designed for smooth shifting and corrosion resistance, it weighs just 208 grams and includes black composite spacers and a steel lockring. Trusted by major bike manufacturers, this cassette delivers reliable performance for both commuters and racers.
| Mounting Type | Clamp-On Mount |
| Manufacturer | SunRace Sturmey Archer |
| Global Trade Identification Number | 04710944242478 |
| Item Package Dimensions L x W x H | 6.2 x 5.9 x 1.9 inches |
| Package Weight | 10.4 ounces |
| Item Dimensions LxWxH | 6.6 x 5.7 x 1.95 inches |
| Brand Name | SunRace |
| Number of Items | 1 |
| Part Number | SR637BPN |
| Model Year | 2017 |
| Size | 12-24T |
B**R
awesome cassette.
changed the feel of my bike for the better. enjoying the different ratio, i feel faster and more efficient. works well with my old group set and frame. couldn’t have asked for much better in a product for this price.
S**R
Works fine
Probably the least expensive 7-gear cassette 11-24T. I am very happy with it, replaced by 12-21T cassette without difficulty. 12-21T is too narrow a ratio, having 24T makes my hills (in central Florida) much easier. Shifting is smooth.
D**B
Five Stars
Remarkably light in weight, it works very well.
G**F
Not as good as Shimano
This is significantly worse shifting than a Shimano HG 50 cassette....at least in my setup. Here the cogs are even closer so it should shift smoother. No derailler adjustment fixed this.
A**R
Exact fit for an old Trek 930
My old Trek 930 is now used exclusively on the road and the old mountain bike gearing was much too low for comfortable riding, for me at least. The shifting has improved over the old Shimano cassette. I'm pleased with this low cost upgrade. 12-24t
Trustpilot
1 month ago
1 week ago
