The fundamental question of Shimano or Sram is also superfluous when retrofitting MTB chainrings. The teeth of the retrofit chainrings presented here bite into every chain.
Absolute Black Oval XTR M9000
The Brits from Absolut Black offer aftermarket chainrings for 11-speed cranks from Sram and Shimano. Available in both oval and round versions.
Price: 56,99 Euro
Weight: 52 g
Standards1; 2; 3; 4 (see below)
Distribution: www.tune.de
B-Laps B-Ring Oval
This blade does not run completely round! The ovality is intended to eliminate the dead centre when pedalling. B-Laps promises a spread of +/- 2 teeth, depending on the crank position.
Price54.90 Euro / 67.90 Euro (Direct Mount)
Weight57 g (Direct Mount)
Standards: 1; 4 (see below)
Distribution: www.bionicon.com
Chromag Sequence
The Canadians deliver stable goods for gravity fans, as the only manufacturer with original Sram-X-Sync gearing.
Price: 69,90 Euro
Weight: 42 g
Standards1, 3, 4 (see below)
Distribution: www.shocker-distribution.com
E*Thirteen Guidering M
If you want to add a little colour to your drivetrain, e*Thirteen has what you need. The integrated threads for the chainring bolts make installation easier.
Price: 64,90 Euro
Weight: 37 g
Standards1 (see below), Direct Mount e*Thirteen
Distribution: www.cosmicsports.de
Hope Retainer Ring
The Brits from Hope keep things simple. One bolt circle, three colours and solid milling.
Price: 62 Euro
Weight: 41 g
Standards1 (see below), Hope Direct Mount
Distribution: www.hopetech.com
Sixpack Chainsaw
Sturdy, lightweight, colourful and easy to assemble! What more could you want? What's more, this good piece of aluminium is produced in Europe.
Price: 59,50 Euro
Weight: 40 g
Standard: 1 (see below)
Distribution: www.sixpack-racing.com
Sram X-Sync Steel
With its steel chainring, Sram is bringing a real price breaker onto the market. It's so cheap that the competition is running out of teeth! But also heavy.
Price: 19,99 Euro
Weight: 110 g
Standards: 3, 4 (see below)
Distribution: www.sportimport.de
Tune XX1 drivetrain
Every tooth a gram! Despite its low weight, the lightweight sprocket already has the threads of the chainring bolts integrated, saving a lot of fiddling.
Price: 77 Euro
Weight: 31 g
Standardonly for XX1
Distribution: www.tune.de
Standards for MTB chainrings
1. 104 mm bolt circle (10x)
The 104 mm bolt circle is fitted to all Shimano and Sram 2/3x10 cranks and most 9-speed cranks. 104 mm is the most commonly used standard, even on most aftermarket cranks such as Raceface and FSA.
2nd Shimano 4-arm standard (11-speed)
The 4-arm standard from Shimano is used on all 11-speed cranks from the Asian company and is characterised by an asymmetrical 96 mm bolt circle. (Model numbers of the corresponding cranks: XT FC-M8000; XTR FC-M9000/9020)
3. sram 1-speed
In addition to the direct mount solution, all Sram 1x11 cranks can also be fitted with a conventional chainring spider for quick changes on the go. XX1 cranks then have a 76 mm bolt circle,
all others (XO1, X1, GX) have a 94 mm bolt circle.
4. direct mount
On many cranks, the chainring spider can be unscrewed and the chainring mounted directly on the crank (without intermediate bolting). Sram uses the GXP gearing for this. Raceface, E*13 and Hope have their own standard. Please note: Direct mount chainrings are available with three different chainlines: Standard, Boost & BB30.
Stefan Frey
Editor
