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⚡ Never lose your chain, no matter the ride!
The XLC CR-A03 Kettenspanner is a high-quality aluminium chain tensioner designed specifically for single-speed bicycle hubs. Featuring 16-20 teeth and a 32mm roller diameter, it ensures optimal chain tension and stability, even during aggressive riding like pump tracks and jumps. Lightweight at 0.12 kg and easy to install at the derailleur hanger, it supports up to 250 pounds load capacity and comes with a 2-year manufacturer warranty, making it a reliable upgrade for serious cyclists.
| ASIN | B002NNEQOI |
| Best Sellers Rank | 68,565 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 195 in Cycling Chains |
| Brand | XLC |
| Country Of Origin | Taiwan |
| Customer Reviews | 4.2 out of 5 stars 475 Reviews |
| Global Trade Identification Number | 04032191731742 |
| Included Components | XLC Chain Tensioner |
| Item Length | 136 Millimetres |
| Item Type Name | Chain Tensioner |
| Item Weight | 0.12 Kilograms |
| Item length | 136 Millimetres |
| Load Capacity | 2.5E+2 Pounds |
| Load capacity | 2.5E+2 Pounds |
| Manufacturer | XLC |
| Manufacturer Part Number | 2501106000 |
| Material | Aluminium |
| Model Number | 2501106000 |
| Product Warranty | 2 year manufacturer |
| Recommended Uses For Product | Maintaining single-speed bicycles, Repairing single-speed bicycle drivetrains |
| Recommended uses for product | Maintaining single-speed bicycles, Repairing single-speed bicycle drivetrains |
| Roller Diameter | 32 Millimeters |
| Roller diameter | 32 Millimeters |
| Strand Type | Einfach |
M**E
Chain stays on even on massive jumps
My son is extremely happy that his chain now never accidentally comes off. He does a lot of pump tracks with big jumps etc. This tensioner does the job and was not expensive.
T**N
Great quality
Bought after a cheaper off-brand one broke. This feels 10x more sturdy. Strong spring also.
M**E
Arrived promptly and in perfect condition. Good price.
I bought it to allow maintenance of chain tension on a hub geared bike without moving the hub in the dropouts. Seems to work pretty well. It is not ideal for this function because the lateral adjustment is at it’s absolute inmost limit. I think it’s designed to allow a multi sprocketed bike to be used as single speed. For my purposes it would be better if the main arm slanted inwards to naturally align the tensioning jockey wheel with the sprocket of the gear. Despite this I am very happy to use it on my bike and won’t change it unless I discover a better alternative.
W**N
Good buy
Does the job , haven't had any problems with it , good quality for the price
E**M
Useful component but needed a bit of adjusting to get right chainline
Solid component that works well in tensioning the chain of a single speed (freewheel) bike. Using a flip-flop wheel in a traditional roadbike however doesn't leave much margin for error and careful adjustment is required as there is a limit on the outward position of the small sprocket arm. Equally adjusting in the other direction can clause the arm to snag the wheel spokes. All that said, if you take care and spend time on adjusting you can probably run a snag-free, straight chain line.
O**S
Did the job
Did the job and kept good tension on chain
M**P
tensioner wheel
Good part in general but the tensional wheel loosens off and falls off when pedal
A**R
My son pleased with it!!
Fits great!! N good value for money!!
Trustpilot
3 weeks ago
2 days ago