Giant Contact Switch SL Dropper Seatpost User Manual
Product of Giant Manufacturing Co., Ltd.
1. Introduction
Congratulations on purchasing the new Giant Contact Switch SL dropper seatpost. This product features a reinforced structure and a durable spring design for long-lasting, stable performance. The new Contact Switch SL is a lightweight dropper seatpost designed for XC and Gravel riding. It utilizes a mechanical spring system, dual-position setting, and a durable structure, offering smooth and efficient performance with minimal weight, making it an ideal choice for challenging climbs and technical descents.
The new design focuses on pure functionality: switch to the high position for efficient pedaling, or to the low position for tackling technical trails. There are no intermediate "fuzzy" zones.
Available in 110mm and 140mm travel options to suit most riders.
The premium aluminum alloy construction 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 will help you conquer trails and ride with confidence!
⚠️ Note: Please read this manual completely before installation and riding. Failure to install and use as instructed may result in serious injury or death.
- Adjusting saddle height during riding may lead to loss of control.
- Any modification to the seatpost is prohibited. All modifications will void the warranty.
- Loose, overtightened, damaged, or worn parts may cause unexpected malfunctions. Regularly inspect the seatpost for wear and damage. If any obvious wear, cracks, or dents are found, stop using the product immediately and contact a Giant authorized dealer for inspection, repair, or replacement.
- Before each ride, ensure all seatpost clamp 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 manual.
2. Parts List
Diagram showing the components of the Giant Contact Switch SL dropper seatpost. Keyed components are indicated by numbers and letters.
- 1. Seat Clamp Head
- 2. Upper Tube
- 3. Lock Ring
- 4. Lower Tube
- 5. Seatpost Size
- 6. Seatpost Total Length
- 7. Serial Number QR CODE [QR Code Excluded]
- 8. Cable Stop
Component Details:
- A. Seat Clamp Nut (M6)
- B. Upper Clamp (for 7mm/7x9mm 7x10mm rails)
- C. Lower Clamp (for 7mm/7x9mm 7x10mm rails)
- D. Waterproof Plug
- E. Cable Entry
- F. Titanium Seat Clamp Screws (M6 Hex Head), Max Torque: 6.0 Nm
3. Specifications
Diagram illustrating the seatpost with key dimensions and specifications.
110MM Travel
| Item | Specification |
|---|---|
| Travel | 110mm |
| Length* | 340mm |
| Max Extension | 260mm |
| Min Insertion Depth | 80mm |
| Diameter | 30.9mm |
| Weight | 360 ±10g |
140MM Travel
| Item | Specification |
|---|---|
| Travel | 140mm |
| Length* | 390mm |
| Max Extension | 310mm |
| Min Insertion Depth | 80mm |
| Diameter | 30.9mm |
| Weight | 390 ±10g |
* Due to manufacturing tolerances, length may vary by ±5mm. This is normal.
4. Remote Levers
Images of various compatible remote levers for the dropper seatpost.
- CONTACT SWITCH CORE
- CONTACT SWITCH AT (GEAR: 150000144)
- GIANT VERTICAL REMOTE (GEAR: 150000074)
- GIANT ROAD DROP-BAR REMOTE
- CONTACT SWITCH SL (GEAR: 150000073)
Depending on the bike model and level, the fitted lever may be one of the above. The Giant Contact Switch SL dropper seatpost is compatible with all Giant remote levers.
5. Cable Routing Installation
Illustrated guide for installing the dropper seatpost cable.
- (If assembling a new bicycle, skip this step) Remove the existing seatpost.
- Loosen the rear seat clamp screws and temporarily remove the clamp pieces. You will see the cable entry point (A). Route the new cable through the seatpost and out from the bottom.
- Roughly position the saddle to a horizontal level. Temporarily tighten the clamp screws (B).
- Fully insert the cable into the outer housing (C). Then, attach the outer housing end to the cable stop at the bottom of the seatpost (D).
- Apply a thin layer of anti-seize paste to the seatpost clamping area (E) or to the inside of the seat tube. Insert the seatpost into the frame to approximately the minimum insertion mark between the lock ring and the mark. Tighten the seatpost clamp according to the recommended torque*. Do not overtighten, as this will affect smooth operation.
- Route the outer cable housing through the appropriate frame hole.
⚠️ Note: Cable routing may temporarily require removal of the crankset and BB. Contact a Giant authorized dealer for assistance.
7. Install Remote Lever
- Mount the lever to the lock ring or corresponding brake interface using a 3mm hex wrench. Recommended torque: 3Nm.
- Route the cable through the micro-adjuster and secure the outer housing.
- Pull the cable taut to ensure the seatpost, cable, housing, micro-adjuster, and lever are properly connected.
- Secure the cable with a 3mm hex wrench. Recommended torque: 1.2Nm (F).
- Trim excess cable and attach the end cap. Adjust the remote lever to your preferred position.
⚠️ Note: Ensure the end cap is installed to prevent the cable from fraying and causing injury.
- Use the remote lever to test the dropper function for initial operation (G).
- Adjust the saddle height to your desired level, ensuring it does not go below the minimum insertion depth. Tighten all screws according to the recommended values (H).
? Warning: If the dropper function operates abnormally, stop riding immediately. Contact a Giant authorized dealer for assistance.
If the minimum insertion depth cannot be reached, do not ride the bicycle. Insufficient insertion depth may lead to component failure, serious injury, or death.
6. Operation
? Warning: Adjusting saddle height while riding may cause loss of control.
Lowering Saddle Height: Press the remote lever while using your body weight to push the saddle down to the low position. Release the lever to complete the adjustment. Note: The Contact Switch SL is designed with both low and high positions. If the seatpost does not reach the low position when the lever is released, it will naturally extend back to the high position.
Raising Saddle Height: Slightly lift your body weight off the saddle, press the remote lever, and release it once the saddle reaches the desired high position.
⚠️ Note: A slight play between the upper and lower tubes is normal for smooth operation of the dropper post. If this play becomes more pronounced with use, contact a Giant authorized dealer for assistance.
7. Maintenance Schedule and Troubleshooting
The new Giant Contact Switch SL, with its simple and integrated design, can be periodically disassembled for maintenance to ensure long-lasting durability. Contact a Giant authorized dealer for assistance.
Recommended Maintenance Schedule: Annual basic maintenance and cartridge service.
For new products, a small amount of lubricant may seep out from the lock ring during the first few rides. This is normal; simply wipe it clean.
Clean the exterior of the dropper seatpost before or after riding. Use a mild soap solution or cleaner to remove dust and dirt. Rinsing with unpressurized tap water will not affect the seatpost, but avoid high-pressure washing.
If the seatpost does not operate correctly, or if the installed position changes over time (typically lowering), re-installation may resolve the issue. If problems persist, contact a Giant authorized dealer for assistance.
| Action | Before/After Riding | Annually | Wobble | Sinking | Sticking |
|---|---|---|---|---|---|
| Clean and Inspect | ✔️ | ||||
| Contact Giant Authorized Dealer | ✔️ | ✔️ | ✔️ | ||
| Service or Repair | ✔️ |
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.
Assembly at Purchase
This warranty is applicable only when the product is purchased as a new item from an authorized GIANT/LIV dealer and assembled by that dealer at the time of purchase.
Limited Remedy
Except as otherwise provided, 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. Regardless of contract, warranty, negligence, product liability, or any other theory, GIANT shall not be liable for any direct, indirect, or consequential damages (including, but not limited to, personal injury, property damage, or economic loss).
Exclusions
The foregoing warranty or any implied warranties do not cover:
- Normal wear and tear of parts, in the absence of assembly or material defects.
- Service performed by non-authorized GIANT/LIV dealers.
- Modifications made to the product from its original condition.
- Use of the product for non-standard, competitive, or commercial activities, or for purposes other than those for which the product was originally designed.
- Damage resulting from failure to follow the user manual.
- Damage to paint, decals, or finishes caused by participation in races, jumps, downhill riding, training for such activities, or exposure to harsh conditions or climates.
- Labor costs for replacement or alteration of parts.
Except for the warranty provided herein and any additional warranties, GIANT, its employees, and agents shall not be liable for any loss or damage arising from GIANT products or related matters (including loss or damage due to negligence or omission), including incidental and consequential loss or damage.
GIANT makes no other express or implied warranties. All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited to the duration of the express warranty stated herein.
Any claim under this warranty must be approved by an authorized GIANT/LIV dealer or distributor. Proof of purchase, such as a sales receipt, must be provided before warranty claims can be processed. Warranty claims made outside the country of purchase may incur additional costs and restrictions.
Details of the warranty period may vary by country. This warranty grants you specific legal rights, and you may also have other rights that may vary by location. This warranty does not affect your statutory rights.
Service Center
To find an authorized GIANT/Liv service center in your area, please visit: www.giant-bicycles.com
