Flight SL Dropper Seatpost

Name: Flight SL Dropper Seatpost
Brand: Ascend Components
SKU: 10000106
Price: 129.99 GBP
Availability: InStock

£129.99

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Ascend Components Flight SL Dropper Seatpost

The Ascend Flight SL Dropper Seatpost sits at the very top of our range, offering the highest level of performance, engineering, and versatility. Designed to complement the finest builds, it’s the lightest and most advanced dropper post we’ve ever created, weighing just 469g for the 150mm drop in a 31.6mm diameter. Not only is it the lightest in our lineup, but it also boasts the shortest insertion depth, making it an ideal choice for a wide variety of frames.

Crafted from premium 7075-T651 alloy, the Flight SL is built to handle the demands of all MTB disciplines, including enduro, while maintaining exceptional durability. Available in 150mm, 170mm, and 200mm travel options, it offers the versatility needed for a range of riding styles. The internal cable routing provides a sleek, refined look while protecting critical components from dirt and debris.

At its core is a high-performance hydraulic cartridge, ensuring smooth and reliable saddle adjustments for precise transitions between climbing and descending. Finished with a signature purple-accented actuator, the Flight SL adds a premium touch to any high-end build.

* Please note a lever and cables is NOT included with the dropper post and would need to be purchased separately.

Key Features:

Our flagship dropper seatpost: Top-tier performance for premium builds
Shortest insertion depth: Ensures compatibility with a wide variety of frames
Travel options: 150mm, 170mm, and 200mm
Diameter options: 30.9mm and 31.6mm
Lightweight alloy construction: Precision-crafted from 7075-T651 alloy for optimal strength and weight
Internal cable routing: Clean and streamlined appearance with added protection
Hydraulic cartridge: Consistent, smooth operation in all riding conditions
Replaceable key parts: Long-term serviceability with spares available from Ascend Components
Built for aggressive riding: Rated for trail, enduro, and other demanding disciplines
Signature purple detail: Sleek and distinctive actuator accent

The Ascend Flight SL sets a new standard for lightweight, high-performance dropper posts. With its advanced design, shortest insertion depth, and cutting-edge features, it’s the perfect finishing touch for any high-end build.

Free Delivery On Orders Over £70

Delivery 3-5 Business Days

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ASCEND COMPONENTS FLIGHT SL DROPPER DIMENSION CHART

Ascend Components Flight SL Dropper Seatpost dimensions and weights for 150mm, 170mm and 200mm travel.
A	Travel	150	170	200
B	Saddle Stack	24.5	24.5	24.5
C	Collar	18.5	18.5	18.5
D	Full Insertion Length	243	266	302
E	Minimum Insertion	112	142	172
F	Total Length	436	479	545
G	Min Seat Height Dropper Up	193	213	243
H	Max Seat Height Dropper Up	324	337	373
I	Min Seat Height Dropper Down	43	43	43
J	Max Seat Height Dropper Down	174	167	173
	Weight 30.9	453g	482g	540g
	Weight 31.6	469g	498g	556g
	Cartridge Number	I36 12 150	I36 12 170	I36 12 200

All dimensions are in millimetres (mm) and all weights are in grams (g).

Dropper Seatpost Sizing Tool

A - Saddle Height (mm): B - Max Frame Insertion (mm): C - Seatpost Diameter (mm):

5 stars: 31 (97%)
4 stars: 0 (0%)
3 stars: 1 (3%)
2 stars: 0 (0%)
1 star: 0 (0%)

Some of the reviews shown are from related products the merchant grouped with this one.

5 star product and customer service 👌

I've been using ascent droppers for 9yrs and they run problem free. I used reverbs before with many of problem and warranty claims. I wanted to upgrade to a 200mm drop so I went for the SL Flight. Used it last night for the first time and as expected flawless. Hopefully many years of happy dropping.
I did order the wrong size which I emailed striaght away stating this. Wow I got a fast response from Matt and was all sorted no problem. 5 star service and product.

Premium quality dropper! The one to get!

Premium quality dropper! The finish and feel is great and really easy to install. The upgraded lever is definitely worth it and feels super solid and easy to actuate. Everything works super well and is definitely worth the price!

Great well designed post

Great well designed post, ordered and sent out quickly to replace a Tranz X post that came with my bike which failed. New post in and it’s great can’t feel any lateral play, works smoothly and can be rebuilt. I got the post and tune lever and works well. Well priced and well made would maybe be cool to see different anodised colours offered for the lever and seal collar rather then an actuator that you don’t see. The website is good and easy to work out what size is needed. I would 100% recommend

Great value and

Great value and performance

Brilliant product at a great price

nice n light

nice n light, good price, goes up and down. happy days

Brilliant piece of kit

Brilliant! My son was delighted to receive this for his 14th birthday and fitted it with his Dad without too much difficulty.

Easy to install

Easy to install. Working well so far.

A few rides in and very impressed

A few rides in and very impressed. It's replaced a first generation Reverb which suffered from all the common faults. The flight SL was straight forward to fit, and it's very smooth in action. The lever is easy to push and the post slides down easily and returns quickly.

Works great … loving

Works great … loving it!

Works

Works perfect

Qood quality

Qood quality, recommended 🤟

Great product, great service!

Ordered my dropper post on the Wednesday, it arrived on the Friday. I forgot to order a lever, so emailed them to ammend the order and I had a human response back to confirm which type within minutes (it was past 9 o'clock in the evening!)
The post itself was easy to install on my 2025 Rockhopper and works like a dream.
The quality is way better than the price suggests, I would highly recommend this dropper post to anyone!

Flight SL

I purchased a Flight SL 30.9 x 150 a year ago now and it has performed faultlessly. I initially bought it for a specific trip into Europe as I wasn’t using one for my typical local riding, but it was so good I decided to keep it on the bike after I returned! It was super straightforward to install, is nice and light, looks the part and was/is great value.

Easy to install, great value

Easy to install, worked straight away and continues to work after multiple rides. Simple to use and looks easy to repair. No speed adjuster but that's not a problem because it's a surprisingly snappy post. Absolute value for money.

Amazing works perfect!

Works exactly as advertised! Insetion depth was correct which helped choice

Works exactly as advertised! Insetion depth was correct which helped choice. Thanks team

Fantastic product at a reasonable price

Fantastic product at a reasonable price, plus speedy delivery and excellent service.

Some play straight out the box

Some play straight out the box, but works fine and lightweight

Arrived with 48 hours

Arrived with 48 hours. Works well.

Great dropper post Went for the sl top of the

Great dropper post
Went for the sl top of the range
Highly recommend 👌
Excellent people to deal with

Can't fault it for the money

Can't fault it for the money. Nice and light, works as it should. The return is a little slow compared to some but fine. The pro lever has a nice action and integrates well with the sram brake lever.

outstanding !

Such a smooth seatpost. Great lever. Never had an issue.

Great product and great customer service

Great product and great customer service. I ordered the wrong size (170) and had to re-order a larger post (200). Returning the original was quick eady with no fuss. A great company to deal with.

Really impressed

Really impressed, especially the money. Decent value and the size is exactly what they suggest on the website. Highly recommended.

The Team at Ascend werevery helpful and delivery and the product were great

The Team at Ascend werevery helpful and delivery and the product were great. Thanks

Amazing quality

Amazing quality. Great price.

Reverb replacement 👍

Had no end of issues with reverb posts so tried an ascend all good so farcan'tfault it and the website was very useful in recommending the correct post thumbs upall round 👍🏻