Shimano Tourney TX800 MTB Bike 3×8 Speed Groupset FC-TX801 Crankset BB-UN101 Bottom Bracket FD-TX800 RD-TX800 Front Rear Derailleur SL-M315 Shifter HG200-8 Cassette HG40 Chain

Option:
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1, Derailleur set(3PCS): 
-Shifter (SL-M315,3x8 Speed)
-Front derailleur (FD-TX800)
-Rear derailleur (RD-TX800)
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2, Full set(7PCS): 
-Shifter (SL-M315,3x8 Speed)
-Front derailleur (FD-TX800)
-Rear derailleur (RD-TX800)
-Crankset (FC-TX801)
-Bottom bracket (BB-UN101)
-Cassette (HG200-8)
-Chain (HG40)
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Tips: Customized groupset project, pls contact customer service
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Item: Crankset
Model: FC-TX801
Level: TourneyTX
Color: Black
Speed: 3x6/7/8
Chainring: 48-38-28T
Compatible chain: HG 8/7/6-speed
P.C.D.: Riveted 
Chain guard: with chainguard
Arm length: 170mm
Bottom bracket type: Sqaure taper
Recommended bottom bracket: BB-UN101
Recommended bottom bracket axle length: 123mm
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Item: Bottom bracket
Model: BB-UN101
Type: Square taper
Shell width: 68mm
Shell thread: BC1.37" x 24T
Axle length: 123mm
Weight: approx 280g
Square tapered axle
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Item: Shifters
Model: SL-M315
Level: Altus
Left: 3 Speed
Right: 8 Speed
Color: Black
Rapid fire plus
Optical gear display
Come with inner cable
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Item: Front derailleur
Model: FD-TX800
Level: TourneyTX 
Speed: 3× 6/7/8 Speed
Compatible chain: HG 8/7/6-speed
Mount: Clamp-on 
Clamp Band size: 31.8mm/34.9mm
(34.9mm with 31.8mm adapter)
Action: Top swing 
Cable route type: Dual-Pull(Top and down pull)
Top gear teeth: 48T
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Item: Rear derailleur
Model: RD-TX800
Level: TourneyTX
Color: Black
Speed: 6/7/8 Speed
Mount: Direct Mount
Cage: Long Cage
Compatible chain: HG 8/7/6-speed
Total capacity: 43T
Max sprocket: 34T
Min sprocket: 11T
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Item: Cassette
Model: CS-HG200-8
Level: TOURNEY TX / Altus / Acera
Speed: 8 Speed
Cogs type: Cassette
Compatible chain: HG 8/7/6-speed
Teeth: 12-14-16-18-21-24-28-32T
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Item: Chain
Model: CN-HG40
Level: Tourney
Speed: 6/7/8 Speed
Links: 116 Links
Type: HG 8/7/6-speed
Pin link plate: Gray
Roller link plate: Brown