Description
BLACKseries by ABSOLUTE BLACK chainring oval 1-fold LK 104 | 4-hole narrow wide black
The ultimate solution for Shimano and other cranks based on the 104 mm bolt bolt circle diameter diameter. If you've ever thought about installing a 1x9 / 1x10 / 1x11 / 1x12 drive and are wondering how to solve the chain guide problem, then here is the answer.
BLACKseries chainrings have special teeth that prevent the chain from jumping off. The principle follows that of the SRAM XX1 chainrings. In conjunction with a SRAM Type2 / 3 or Shimano Shadow + rear derailleur, which have a greatly increased cage preload, the chain is reliably held in position even without a chain guide.
oval chainrings
The ovalization of the chainring increases performance and traction off-road by varying the drive train and optimizing the resistance. When pedaling, natural strengths and weaknesses are brought into harmony. In this way, better use of the stronger muscle groups is achieved and a balance is created in the weaker muscles on the way to work (lower stroke).
about BLACKseries
BLACKseries is a sister company of absoluteBLACK Ltd. It was founded out of the desire to be able to offer an alternative to the ultra-modern products from absoluteBLACK.
BLACKseries products use the same raw materials, manufacturing processes, quality controls and tooth profiling as absoluteBLACK. The difference lies in the overall industrial design, which saves a lot of time for CNC machining and thus makes the products more attractively priced for the end customer.
Technical specifications:
intended use : MTB, dirt jump, DH
Material: 7075 Txxx aluminum
Technology: Narrow Wide
bolt circle diameter : 104 mm (standard)
Attachment: 4-arm spider
Number of teeth: 30, 32, 34 or 36 teeth
Compatibility cranks : all cranks with 104 mm bolt circle diameter (Shimano XT / Zee / Deore / SLX / XTR, Race Face, FSA, E13)
Compatibility chain: 9-speed, 10-speed , 11-speed , 12-speed or single 12-speed
Mounting position: inside
chain line : depending on the crank used (30T: -2.5 mm | 32T: -2.0 mm)
Offset: standard
Adjustment options: none
Range (ovalization): n / a
Timing (introduction of force):
- 30 teeth chainring corresponds to 28 teeth at the dead center and 32 teeth in the power zone
- 32 teeth chainring corresponds to 30 teeth at the dead center and 34 teeth in the power zone
- 34 teeth chainring corresponds to 32 teeth at the dead center and 36 teeth in the power zone
- 36 teeth chainring corresponds to 34 teeth at the dead center and 38 teeth in the power zone
Color: Black
Weight according to the manufacturer: 37g (30 teeth), 46g (32 teeth), 49g (34 teeth), 59g (36 teeth)
Weight weighed: 44g (32T)
Scope of delivery:
1x BLACKseries by ABSOLUTE BLACK chainring oval 1-fold LK 104 | 4 hole narrow wide black
Important: Only the 30 tooth chainring is delivered including all mounting parts!
Assembly instructions:
- There is a small mark (triangular) on the inner circumference of the chainring.
This marking must be behind the crank arm.
- When installing the 32 tooth chainring (with integrated thread), chainring bolts at least 6 mm long are required
needed.
