Option：
1, 3PCS Groupset: SL-M315 shifters + FD-M2020 front derailleur + RD-M310 rear derailleur
2, 7PCS Groupset: SL-M315 shifters + FD-M2020 front derailleur + RD-M310 rear derailleur + FC-MT101 crankset + BB-UN101 bottom bracket + HG31-8 cassette + HG71 Chain

Model: SL-M315
Left: 2 Speed
Right: 8 Speed
Come with inner cable
Shimano Altus MTB gear shift pods can be used with any brake lever and are easily fitted to the handlebars
Rapidfire system uses ergonomic shaped lever for easy accurate gear selection
Optical gear display
Suitable for Mountain or Hybrid bikes

Model: FD-M2020
Clamp size: 34.9mm
Cable route type: Dual-Pull
(without 31.8mm adapter,if you need pls leave message)
Suit for 36T chainring
Designed for 2X9 speed drivetrains, the SHIMANO ALTUS front derailleur is HYPERDRIVE compatible and available in down swing and top swing versions.

Model: RD-M310
Color: Black
Speed: 8 speeds
Largest cog: 34T
Capacity: 43T
Weight: approx 310g
Wide link design for more rigidity and precise shifting
Oversize 15-tooth tensioner and 13-tooth guide pulleys reduce noise and wear
Each batch may come from different original country

Model: FC-MT101
Color: Black
Compatible for 8/9 Speed
Teeth: 36-22T
Weight: 800g
Crank arm: 170mm
Bottom bracket interface: Square taper
Recommended bottom bracket length: 122-124mm

Model: BB-UN101 （Some batch is BB-UN100, pls note)
Fits shell length: 68mm
Total length: 123mm
Sheell thread: BC1.37
Weight: approx 280g

Model: CS-HG31-8
Teeth: 11-34T
Speed: 8 Speed
Weight: approx 310g
Each batch may come from different?origin country
Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load
Sprockets are cut away to reduce weight without reducing rigidity

Model: CN-HG71
Speed: 6/7/8 Speed
Links: 112 Links
Hyperglide (HG) series 6, 7, 8 speed compatible chain