DJC Bike Chainring 104mm BCD Round/Oval MTB 104BCD 30T to 52T 7/8/9/10/11/12 Speed Narrow Wide Tooth Aluminum 7075 Super Lightweight 30T 32T 34T 36T 38T 40 42 DH XC Trail Fat Bike Ebike
Description
🚴♀️ Upgrade your ride with precision and power — don’t get left behind!
- READY TO RIDE PACKAGE - Includes chainring plus 4 pairs of steel bolts backed by 1-year coverage.
- PRECISION 104 MM BCD FIT - Seamlessly compatible with Shimano & Prowheel cranksets for flawless installation.
- SUPERLIGHT 7075 ALUMINUM - CNC-machined for ultra-lightweight strength—ride faster without the bulk.
- NEXT GEN NARROW WIDE TEETH - 2nd generation tooth design self-cleans and extends chainring lifespan.
- VERSATILE SPEED COMPATIBILITY - Supports 7 to 12-speed drivetrains, perfect for modern 1x setups.
The DJC Bike Chainring features a precise 104mm BCD fit compatible with popular Shimano and Prowheel cranksets. Crafted from lightweight yet durable 7075 aluminum using CNC machining, it supports 7 to 12-speed drivetrains for modern 1x setups. Its advanced narrow wide tooth design improves chain retention and self-cleans for longer life. The package includes steel bolts and a 1-year warranty, making it a premium upgrade for MTB, trail, fat bike, and e-bike riders seeking performance and reliability.
Specifications
| Item Package Dimensions L x W x H | 7.24 x 7.2 x 0.59 inches |
| Package Weight | 0.09 Kilograms |
| Item Dimensions LxWxH | 7.87 x 7.87 x 0.39 inches |
| Brand Name | DJC Components |
| Color | 1# Round Black |
| Material | Aluminum |
| Manufacturer | Fengdong |
| Part Number | FDDJC104 |
| Size | 34T |
Reviews
A**I
Easy install, no issues
This chainring is accurate to the BCD they advertise and it fits great for converting my 2 speed front derailleur to a single speed on my GT Zaskar with Shimano deore cranksetYou do have to account for some extra play with the chain because it will not be centered perfect unless you buy a specific crankset for a single speed, I've had no issues with mine so far however just anticipate the chain will wear quickerIt is a good quality sprocket and the coating on the paint seems to at least be somewhat durable, for the low price they ask it's a no brainer upgrade
H**N
Great Value
This is good quality and great price. Chainring didn't look like the picture but it's ok as long as it works
H**.
Sprocket fits works great
I'm happy with sprocket,gonna order couple mo re
M**K
Three so far. Excellent product.
This is all you need to convert a 3X or 2x drive train to a 1x as long as your chainrings are not riveted in. Just unbolt, all three and bolt this one where the center one was with the included shorter nuts.Note - you can also cut down the bolts that hold the first chain ring on so the chain does not get smashed into your BB tube in the unlikely event you do drop a chain. I used a mill but I don't see why you can't do it with an angle grinder. See picture 1 and 2.love rant bellow:I can't believe how awesome the narrow-wide chaining is compared to a regular traditional one. No more dropped chains, even without a derailleur guide!!! For only $12 each we have converted 3 bikes over to 1X drive trains. You get no dropped chains and the ability to focus on riding and not shifting. Long live the narrow wide!!!
A**3
Work great
Has improved narrow/wide teeth over Shimano OE ring gear. Seems to wear ok after 500 miles on an E-MTB.
D**E
Good part
Deep red and looks great
R**R
inner diameter was 89.5mm, ~.5mm less than the SRAM cranks
Inexpensive, but the inner diameter was 89.5mm, ~.5mm less than the SRAM cranks' dimension (and my previous Absolute Black 32T) so I had to grind .5mm off of each of the 4 inner spots.
J**E
About 150miles still looks brand new
Used this on a budget 1x8 conversion and can't complain at all. I tried both oval and round cant really tell much difference but seems oval doesn't wear me out as much.
Common Questions
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