The Shimano RD-M640 ZEE 10 SPD Derailleur is a reliable and durable rear derailleur. It features Shimano's stabilizing Shadow RD+ clutch technology, which is proven to reduce chain slap and noise. This derailleur is designed for use with wide-range cassettes, with a maximum cog size of 36t.
| SIZE | HEIGHT |
| X- Small | 3'9-5'1 |
| Small | 5'2-5'5 |
| Medium | 5'6-5'9 |
| Large | 5'10-6'1 |
| X-Large | 6'2+ |
| Small | Medium | Large | X - Large | |
| 1. Seat Tube | 400 | 420 | 445 | 495 |
| 2. Top Tube | 574/573 | 598/597 | 626/625 | 655/654 |
| 3. Head Tube | 95 | 105 | 115 | 125 |
| 4. Chainstay | 435/433 | 435/433 | 440/438 | 445/443 |
| 5. Bottom Bracket Height | 341/348 | 341/348 | 341/348 | 341/348 |
| 6. Wheelbase | 1190/1189 | 1215/1213 | 1244/1243 | 1273/1272 |
| 7. Head Angle | 65/65.5 | 65/65.5 | 65/65.5 | 65/65.5 |
| 8. Seat Angle | 77.6/78.1 | 77.5/78 | 76.9/77.4 | 76.4/76.9 |
| 9. Standover | 733/738 | 754/759 | 769/775 | 780/786 |
| 10. Reach | 440/445 | 460/465 | 480/485 | 500/505 |
| 11. Stack | 612/608 | 621/617 | 631/626 | 640/635 |
| FRAME |
Carbon DMC-G 160mm |
| HEADSET | FSA Orbit | 1.5 | Zero Stack |
| SEAT CLAMP |
Alloy CNC | 39.3mm |
| FORK |
Fox 38 Performance Elite Grip2 180 | 44 Offset |
| REAR SHOCK |
Fox Float X2 Performance Elite Trunnion | 0.3Vspacer|205x65 |
| HANDLEBAR | RaceFace Next R35 | B:35mm | R:20mm | W:800mm |
|
STEM |
RaceFace Turbine R35 | B:35mm | L:40mm | 0° |
| SADDLE |
SDG BELAIR 3.0 |
| SEATPOST |
SDG Tellis | 34.9mm |
| SEATPOST LEVER | SDG Tellis | I-Spec EV | 1x Lever |
| GRIPS |
Devinci Performance | w/lock-on |
| BRAKES | Shimano XT M8120/M8100 | 4 Pistons |
| ROTOR | Shimano RT76 | 203mm |
| REAR DERAILLEUR |
Shimano XT M8100 | 12s |
| REAR SHIFTER |
Shimano XT M8100 | 12s | I-spec EV |
| CRANKSET |
Shimano XT M8130-1 | 32T | SuperBoost 157 |
| BOTTOM BRACKET | Shimano MT801 | BSA | 68/73mm |
| CASSETTE | Shimano XT M8100 | 12s | 10-51T | Microspline |
| CHAIN | Shimano M7100 | 12s |
| CHAIN GUIDE | E*Thirteen LG1 Lower Slider |
| RIM | RaceFace ARC30 | 30mm inner | TR |
| FRONT HUB | RaceFace Vault | 6bolts | TA 15x110mm |
| REAR HUB | RaceFace Vault | 6bolts | TA 12x157mm | Microspline |
| SPOKES | Sapim Stainless 14G w/Nylok |
| FRONT TIRE | Maxxis Assegai | 29x2.5wt | 3C MaxxGrip DoubleDown TR |
| REAR TIRE | Maxxis Minion DHRII | 29x2.4wt | 3C MaxxGrip DoubleDown TR |
