Giant Contact Switch SL Dropper Seatpost User Manual
1. Introduction
Congratulations on purchasing the new Giant Contact Switch SL dropper seatpost. This product offers durable structure and a metal spring design for long-lasting, stable performance. The new Contact Switch SL is a lightweight dropper seatpost designed specifically for XC and Gravel riding. It utilizes a mechanical spring system, dual-stage adjustment, and a durable structure to provide smooth, efficient performance, ideal for tackling challenging climbs and technical descents.
The new design returns to the purest form of usability – switch to the high position to maintain pedaling efficiency; or switch to the low position to tackle technical sections. No more intermediate "fuzzy" zones.
Available in 110mm and 140mm travel options to suit most riders. The premium aluminum alloy structure provides excellent strength while maintaining extreme lightness. Titanium screws and a redesigned seat clamp further reduce weight.
Easy to use and affordably priced, the Giant Contact Switch SL empowers you to conquer any trail!
- Adjusting saddle height while riding may cause loss of control.
- Do not modify the seatpost in any way. Any modification will void the warranty.
- Loose, overtightened, damaged, or worn parts may lead to unexpected malfunctions. Regularly inspect the seatpost for wear and damage. If any obvious wear, cracks, dents, or other abnormal conditions are found, stop using the product immediately and contact a Giant authorized dealer for inspection, repair, or replacement.
- Before each ride, ensure all seatpost screws are tightened to the recommended torque.
- Overtightening the seatpost clamp may affect height adjustment function. Refer to the recommended torque for the seatpost clamp or your bike's owner manual.
2. Parts List
The following components are included:
- 1. Seat Clamp Head: The mechanism that secures the saddle.
- 2. Upper Tube: The upper section of the seatpost.
- 3. Lock Ring: Secures the upper and lower tubes.
- 4. Lower Tube: The lower section of the seatpost, which inserts into the frame.
- 5. Seatpost Diameter: Indicates the diameter of the seatpost (e.g., 30.9mm).
- 6. Seatpost Length: The total length of the seatpost.
- 7. Serial Number QR Code: A code for product identification.
- 8. Cable Stop Point: Where the outer cable housing connects to the seatpost.
Seat Clamp Components:
- A. Seat Clamp Nuts (M6): Used with the clamp plates.
- B. Upper Clamp Plate: For 7/9mm seat rails.
- C. Lower Clamp Plate: For 7/9mm seat rails.
- D. Waterproof Plug: Protects the cable entry.
- E. Cable Entry Port: Where the inner cable enters the seatpost.
- F. Titanium Alloy Seat Clamp Screws (M6 Hex Head): Max torque: 6.0 Nm.
3. Specifications List
110MM Travel
| Item | Specification |
|---|---|
| 1. Travel | 110mm |
| 2. Full Length* | 340mm |
| 3. Max Extension | 260mm |
| 4. Min Insertion Depth | 80mm |
| 5. Diameter | 30.9mm |
| Weight | 360 ±10g |
140MM Travel
| Item | Specification |
|---|---|
| 1. Travel | 125mm |
| 2. Full Length* | 390mm |
| 3. Max Extension | 310mm |
| 4. Min Insertion Depth | 80mm |
| 5. Diameter | 30.9mm |
| Weight | 390 ±10g |
*Full length may vary by ±5mm due to manufacturing tolerances. This is normal.
4. Remote Levers
Depending on the bike model and specifications, the compatible remote lever may be one of the following:
- Contact Switch SL: A specific lever for this seatpost.
- Contact Switch AT: Another compatible lever option.
- Giant Vertical Remote: A vertical lever design.
- Giant Road Drop-Bar Remote: A lever designed for drop handlebars.
The Giant Contact Switch SL dropper seatpost is compatible with all Giant levers. For lever mounting, ensure screws are tightened to 3Nm.
5. Cable Routing Installation
Follow these steps for installation:
- (If assembling a new bicycle, skip this step) Remove the existing seatpost and saddle.
- Loosen the rear seat clamp screws and temporarily remove the clamp plates. You will see the cable entry port (A). Insert the new cable through the seatpost and out the bottom.
- Roughly position the saddle to a level state. Loosely tighten the clamp screws (B).
- Fully insert the inner cable into the outer casing. Attach the outer casing to the cable stop point at the bottom of the seatpost (D).
- Apply a thin layer of anti-seize paste to the seatpost's clamping area (E) or to the inside of the frame's seat tube. Insert the seatpost into the frame, aligning it approximately to the minimum insertion mark and the lock ring. Tighten the seatpost clamp to the recommended torque*. Do not overtighten, as this may affect smooth operation.
- Route the outer cable through the appropriate frame holes according to your bike's specifications.
7. Installing the Remote Lever
- Mount the lever to the lock ring or corresponding brake interface using a 3mm hex wrench. Recommended torque: 3Nm.
- Insert the inner cable through the micro-adjuster and secure the outer casing.
- Pull the inner cable taut to ensure the seatpost, cable, outer casing, micro-adjuster, and lever are all properly connected.
- Secure the inner cable using a 3mm hex wrench. Recommended torque: 1.2Nm (F).
- Trim excess inner cable and fit an end cap. Adjust the remote lever to your preferred position.
8. Test Dropper Operation
Use the remote lever to test the dropper seatpost's up and down movement (G).
9. Final Adjustment
Adjust the saddle height to your preferred position, ensuring it does not go below the minimum insertion depth. Tighten all screws to the recommended torque (H).
6. Operation
Lowering Seat Height: Press the remote lever simultaneously and apply weight to the saddle to lower it to the low position. Release the remote lever to complete the adjustment. Note: The Contact Switch SL is designed with distinct low and high positions. If the lever is released before reaching the low position, the seatpost will naturally extend to the high position.
Raising Seat Height: Shift your weight slightly off the saddle, press the remote lever, and the saddle will rise. Release the remote lever once it reaches the high position.
A slight rotational play or gap between the upper and lower tubes is normal and designed to ensure smooth operation. If this play becomes significantly more noticeable over time, please contact a Giant authorized dealer for assistance.
7. Maintenance Schedule and Troubleshooting
The new Giant Contact Switch SL features a simple, integrated design that allows for regular maintenance to ensure its longevity and durability. Please contact a Giant authorized dealer for assistance.
Recommended Maintenance Period: Perform basic maintenance and clamp service once a year.
Slight amounts of lubricating grease may seep out from the lock ring area during the first few rides on a new product. This is normal; simply wipe it clean.
Clean the exterior of the dropper seatpost before or after each ride. Use a neutral soap or cleaning solution to remove dust and dirt. Rinsing with low-pressure tap water will not affect the seatpost, but avoid using high-pressure washing methods.
If the seatpost does not operate correctly, or if the installed position changes over time (typically lowering), reinstallation may resolve the issue. If you continue to experience difficulties, please contact a Giant authorized dealer for assistance.
| Action | Before/After Riding | Once a Year | Wobble | Sink | Stiff Operation |
|---|---|---|---|---|---|
| Clean and Inspect | ✓ | ||||
| Contact Giant Dealer for Service/Maintenance | ✓ | ✓ | ✓ | ✓ |
8. GIANT Limited Warranty
GIANT warrants the GIANT CONTACT SWITCH SL product to the original owner for a period of two (2) years from the date of purchase.
Purchase Assembly
This warranty is applicable only to assembly performed by an authorized GIANT/LIV dealer at the time of purchase of a new product from an authorized GIANT/LIV dealer.
Limited Remedy
Unless otherwise stipulated, the sole remedy under this warranty or any implied warranty shall be, at GIANT's sole discretion, the replacement of defective parts with parts of equal or greater value. This warranty is effective from the date of purchase, is valid only for the original purchaser, and is non-transferable. Under no circumstances shall GIANT be liable for any direct, indirect, or consequential damages (including but not limited to personal injury, property damage, or loss of economic value), whether based on contract, warranty, negligence, product liability, or any other theory.
Exclusions
The foregoing warranty or any implied warranties do not cover:
- Normal wear and tear of parts when there is no defect in assembly or materials.
- Service performed on the product by unauthorized GIANT/LIV dealers.
- Modifications made to the product from its original condition.
- Use of this product for non-standard purposes, competition, or commercial activities, or for any use other than its original design.
- Damage resulting from failure to follow the user manual.
- Damage to paint, decals, or finishes resulting from participation in competitions, jumping, downhill riding, training for such activities, or exposure of the product to harsh conditions or climates.
- Labor costs associated with replacing or changing parts.
Except as provided within the scope of this warranty and any additional warranties, GIANT, its employees, and agents shall not be liable for any loss or damage arising from or related to GIANT products or their use (including consequential or incidental damages due to negligence or fault).
GIANT makes no other express or implied warranties. Any implied warranties, including warranties of merchantability or fitness for a particular purpose, are limited to the duration of this express warranty.
Any claim under this warranty must be approved by an authorized GIANT/LIV dealer or distributor. Proof of purchase or other documentation verifying the date of purchase must be provided before processing a warranty claim. Warranty claims made outside the country of purchase may incur additional costs and restrictions. Warranty details may vary by country. This warranty grants you specific legal rights, and you may also have other rights that vary by location. This warranty does not affect your statutory rights.
Service Center
For information on authorized GIANT/LIV service centers in your area, please visit: www.giant-bicycles.com
