Slack-R Angle Headset EC44/EC56
1436-1439
Regular price $99.00 USDShipping calculated at checkout.
Compatability Check
Measure the headset cups currently on your bike to ensure you have sufficient steertube length.
Total length of exposed steer tube must be greater than total Slack-R stack height - total original cup stack.
The 9point8™ Slack-R™ headset angle kit changes the head tube angle on bikes with ZS/EC headsets. (ZS44 and EC44 upper bearing and EC49, EC56, and ZS56 lower bearing only.)
|
Upper Cup |
Size | Stack (mm) | Lower Cup | Size | Stack (mm) | Kit Angle Range | Kit Weight (g) |
|---|---|---|---|---|---|---|---|
| 0000-1436 | EC44 | 15.9 | 0000-1438 | EC49 | 14.1 | 2.0 - 2.8 | 83.1 |
| 0000-1436 |
EC44 |
15.9 | 0000-1439 | EC56 | 14.1 | 2.0 - 2.8 | 103.9 |
| 0000-1436 | EC44 | 15.9 | 0000-1440 | ZS56 | 3.7 | 1.5 - 2.1 | 70.1 |
| 0000-1437 | ZS44 | 11.0 | 0000-1438 | EC49 | 14.1 | 1.4 - 1.9 | 69.7 |
| 0000-1437 | ZS44 | 11.0 | 0000-1439 | EC56 | 14.1 | 1.4 - 1.9 | 90.5 |
| 0000-1437 | ZS44 | 11.0 | 0000-1440 | ZS56 | 3.7 | 0.8 - 1.2 | 56.7 |
* Kit weights only include cups, as received weights may vary.
** Angles are dependent on headtube length, please double check with our filter tools.
Slacken Configuration "Typical" Medium MTB Frame
| Top Cup | Bottom Cup | Head Tube | Seat Tube Angle | Bottom Bracket Height | Front Center | Wheelbase | Stack | Reach | Stack (to stem) | Reach (to stem) | Headset & Head Tube Length | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ZS | EC | ZS | EC | Angle Change | Head Angle | Trail | |||||||||
| X | X | -1.00 | -0.75 | 5.67 | 0.25 | -1.95 | 9.91 | 9.78 | -2.33 | 2.06 | -2.10 | 1.50 | 0.16 | ||
| X | X | -1.93 | -1.47 | 11.18 | 0.47 | -3.64 | 17.75 | 17.51 | -4.99 | 2.50 | -0.13 | -0.88 | 5.12 | ||
| X | X | -1.64 | -1.62 | 12.38 | 0.02 | -0.11 | 21.35 | 21.34 | -0.34 | -0.29 | 0.23 | -1.54 | 10.55 | ||
| X | X | -2.49 | -2.28 | 17.47 | 0.22 | -1.68 | 28.45 | 28.35 | -2.86 | 0.01 | 2.27 | -4.07 | 15.53 | ||
Steepen Configuration "Typical" Medium MTB Frame
| Top Cup | Bottom Cup | Head Tube | Seat Tube Angle | Bottom Bracket Height | Front Center | Wheelbase | Stack | Reach | Stack (to stem) | Reach (to stem) | Headset & Head Tube Length | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ZS | EC | ZS | EC | Angle Change | Head Angle | Trail | |||||||||
| X | X | 1.00 | 0.73 | 5.51 | -0.26 | 2.07 | -9.78 | -9.66 | 2.44 | -2.22 | 2.08 | -1.63 | 0.16 | ||
| X | X | 1.93 | 1.46 | 10.91 | -0.47 | 3.69 | -17.77 | -17.56 | 5.03 | -2.60 | 8.83 | -3.49 | 5.12 | ||
| X | X | 1.64 | 0.76 | 5.77 | -0.87 | 6.86 | -12.54 | -12.17 | 7.22 | -9.07 | 6.85 | -8.46 | 10.55 | ||
| X | X | 2.49 | 1.43 | 10.71 | -1.06 | 8.35 | -19.83 | -19.40 | 9.66 | -9.32 | 13.47 | -10.23 | 15.53 | ||
