Jack Dropper Seatpost
Jack Dropper Seatpost

Jack Dropper Seatpost

311-39431-A101

Sale price$399.99
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Shipping calculated at checkout.

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Focus on the ride, allow the Jack to hold your saddle exactly where you set it!

The Manitou Jack dropper post is available in three drop options – 185mm, 160mm, and 80mm – for improved handling when you need it. Available in 30.9 and 31.6mm diameters, the Jack includes a Manitou under bar lever which features a cartridge bearing for smooth, precise operation.  To further the smooth operation and setup on the 185mm and 160mm post the included 1.1mm cable with Manitou specific cable head negates the use of the cable clamp, allowing all the cable tension adjustment to be completed on the lever side.  80mm post use a standard derailer cable for its lever side adjustments.  

•80mm,160mm, or 185mm Travel
•30.9mm or 31.6mm Diameter
•Cable Actuated lever
•Internal Cable Routing

•Travel: 80mm, 160mm, or 185mm
•Post Diameter: 30.9mm and 31.6mm
•Weight: 525g (30.9) 565g (31.6) for 185 and 160mm, 365g (30.9) 380g (31.6) for 80mm
•Remote: Manitou Underbar, SRAMM peacemaker compatible
•Length (without actuator): 485mm (160,185mm) 320mm (80mm)
•Max Insertion: 227mm (160,185mm), 197mm (80mm)
•Min Insertion: 130mm (160,185mm), 80mm (80mm)
•Clamp Style: 2 bolt
•Saddle Bolt Material: Steel
•Saddle Clamp Material: Aluminum
•Actuator: 360 degree toolless rotation 32mm length
•Cartridge Bleed: Auto-reset function
•Max Rider Weight: 250lbs

• Manitou Underbar Lever
• Jagwire dropper specific cable and housing

Jack in the News

“We are very impressed with the design and function of the dropper post.”

It all adds up to one awesome product and definitely one you should consider for your next dropper.”

"For those who ride hard, and those who hardly want to worry about maintenance, the Manitou Jack is a solid choice."

Customer Reviews

Based on 1 review
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R.W.
Jack 80 mm review

I purchased two posts to use on Specialized Epics ridden mostly on Midwest singletrack. Install and setup was straightforward on both bikes, and did not require any additional effort other than minor adjusts at the release lever. The seat post is a well made and light weight compared to a rigid post.

The lever is a solid unit for a manufacturer provided piece. It has a nice shape with plenty of position adjustment.

After a few rides, I found this to a great component that works well. I does this job reliably with no additional thought. For the type of riding we have in this region, this is an excellent choice.


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