White Industries MR30 TSR 1x Chainring

White Industries MR30 TSR 1x Chainring
This is the White Industries MR30 TSR 1X Chainring.
The White Industries TSR 1X Chainring features a precision-machined narrow-wide tooth profile for reliable chain retention on 812-speed 1x and singlespeed drivetrains. Made in Petaluma, California.
Features

Designed for 812-speed 1x drivetrains
Compatible with singlespeed drivetrains
Tall-Short-Ring (TSR) narrow-wide tooth profile for improved chain retention
Reduces the risk of dropped chains on rough terrain
Precision CNC-machined in Petaluma, California
Manufactured from 7075-T6 aluminum
48T52T chainrings machined from 6061-T6 aluminum
Lightweight, durable, and easy to service
Made in the USA

Chainlines:

Mountain
M30

Adventure
A30

Road
R30

Gravel
G30

Crank arm

M30 (mountain arms)
R30 (road arms)
R30 (road arms)

M30 (mountain arms)

Spindle

M30 (mountain spindle)
M30 (mountain spindle)
R30 (road spindle)

R30 (road spindle)

1x chainline(3mm offset ring, facing inward)

49mm
49mm
46.5mm

46.5mm

1x Boost chainline(flat ring)

52mm
52mm
49.5mm

49.5mm

1x chainline(3mm offset flipped outward)

*55mm
*55mm
52.5mm

52.5mm

2x chainline(between rings)

47.5mm
47.5mm
45mm

45mm

Specs

Available in black anodized and raw (unpolished) silver
28 teeth to 52 teeth in 2 tooth increments
Boost and non-Boost versions

Standard/non-boost rings have a 3mm offset (inward)
Boost rings are flat (so 3mm outward of our standard/non-boost rings)
Standard/non-Boost rings can be flipped so the offset shifts outward to give you 3mm more outward offset than our Boost rings

This set up is is used on M30 cranks for a55mm chainline needed for SRAM Transmission, Rohloff hubs, and Super Boost 157mm spaced hubs

Compatibility

MR30 series TSR chainrings fit White Industries MR30 series spindle cranksonly
Compatible with SRAM 10/11/12 speed and 12 speed flat-top chains
Compatiblewith SRAM 12 speed Eagle Transmission flat-top chains
Compatible with Shimano 9/10/11/12 speed chains (and now works with the Shimanos 12 speed Quick Link)
Compatible with single speed 3/32 chains, but 8 speed 3/32 chains are quieter

We like the SRAM PC 870, KMC X8, and KMC Z8.1/8.3

Not compatible with half links
Not compatible with 1/8 chains