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MIXED Full Carbon Fiber 5D Ultra Pack Light Weight Bike Saddle 143mm 135g for Road MTB Mountain Bicycle Carbon Seats
Saddle

MIXED Full Carbon Fiber 5D Ultra Pack Light Weight Bike Saddle 143mm 135g for Road MTB Mountain Bicycle Carbon Seats

Weight135g
CategorySaddle

The MIXED Full Carbon Fiber 5D saddle is a lightweight, affordable carbon saddle praised for its comfort and value, though it has some build quality concerns and is fit-sensitive, particularly for riders with narrow sit bones.

Pros

  • Extremely lightweight (around 124-135g)123
  • Full carbon construction with visible carbon weave, giving a high-end look3
  • Deep pressure relief channel helps prevent perineal pressure34
  • Comfortable for many riders, even on longer rides (2.5 hours or more)345
  • Excellent value for money compared to Western brands346
  • Shape works well for narrow-hipped riders and those who rotate pelvis forward2
  • Stiff carbon shell with no flex, providing a solid platform3
  • Good clearance on wings and narrow front reduces chafing2

Cons

  • Top cover is glued on, indicating cheaper construction method34
  • Fit-sensitive; wrong position or wide sit bones can cause discomfort42
  • Padding is not as good as 3D-printed saddles2
  • Delicate; one reviewer reported snapping at the inside edge from bearing weight on the front2
  • Poor finish quality in some units (visible imperfections at cover/carbon junction, messy bonding)1
  • Narrow shape may not suit riders with wide sit bones42
  • Manufacturing consistency may vary; some units not perfectly symmetrical4

Key Facts

  • Weighs between 124g and 135g depending on unit (claimed 135g, measured 124-126g)134
  • Full carbon shell and rails, with Toray T700 carbon mentioned in one review43
  • Available in 143mm and 155mm widths4
  • Short-nose design with a deep central pressure relief channel34
  • Top material is thin EVA pad, not 3D-printed lattice4
  • Rails are oval-shaped, requiring a compatible saddle clamp3
  • Price ranges from under $20 to around $45 depending on source1234

Reviews & Ratings

nikinik
20:13
$20 vs $60 Carbon Saddle — Is There Really a Difference?

The reviewer provides a detailed analysis of the MIXED Full Carbon Fiber 5D Ultra Pack Light Weight Bike Saddle (referred to as the 'mixed fullcarbon 5D saddle' or 'mixed saddle'). They state it is substantially better than the previous saddles reviewed, with superior build quality, a more substantial feel, and a modern short-nose geometry. The top material is softer and grippier, and the carbon weave is visible on the bottom plate and rails, indicating a full carbon construction. It is very stiff with no flex. The reviewer found it comfortable on a 2.5-hour ride, praising its shape and the larger pressure relief channel. They note the saddle cover is still glued on, which is a cheaper construction method, but overall they are very positive. They rank it highly and explicitly recommend it as a great option.

March 04, 2026Watch on YouTube
Road Cycling Academy
07:42
Are cheap AliExpress saddles as good as top-tier brands?

The reviewer discusses the MIXED 5D saddle as one of three AliExpress saddles they use in their clinic. They describe it as extremely light and specifically recommend it for people with incredibly narrow pelvises and sitbone dimensions under 100mm. The saddle features a very flexible carbon shell, a massive rise at the rear, and tremendous clearance on the wings, making it good for riders who rotate their pelvis forward. However, they note the padding is not as good as 3D printed alternatives and that it is a bit delicate, having snapped on the inside edge from bearing weight on the front.

October 01, 2025Watch on YouTube
Tom Bowers Cycling2 videos
15:24
I Tried 5 AliExpress Bike Products – Deal or Disaster?

The reviewer examines the MIXED Full Carbon Fiber 5D Ultra Pack Light Weight Bike Saddle, noting its low price and lightweight design but expressing concerns about the finish quality and durability.

July 07, 2025Watch on YouTube
15:04
I Built a Full Carbon AliExpress Gravel Bike for Under £1000!

The MIXED Full Carbon Fiber 5D Ultra Pack Light Weight Bike Saddle 143mm 135g for Road MTB Mountain Bicycle Carbon Seats is not mentioned in this video.

August 28, 2025Watch on YouTube
Cyclists Hub
Mixed 5D Saddle Review: Cheap, Lightweight, and Comfy - Cyclists Hub

The reviewer finds the Mixed 5D saddle to be a rare cheap part that performs well, being lightweight, having an effective pressure relief channel, and replacing more expensive saddles. However, it is fit-sensitive and has some build quality compromises.

July 13, 2026Read full review
nikinik
The Most Surprising Saddle-Find on AliExpress

The reviewer found the MIXED Full Carbon Fiber 5D saddle to be a surprisingly high-quality product that excels in weight, build quality, and price. They noted its solid construction, comfort during long rides, and exceptional weight savings compared to non-carbon alternatives.

April 16, 2026Read full review
Purchased: 2025-12-22

During these latest sales I picked up a Mixed 5D carbon saddle for less than $25. I have to say, I'm quite impressed with it. It fits me a little more comfortably than the last Ryet I picked up (which was a big reason I bought it, because I was a little disappointed in that Ryet). I guess I now have an entire fleet of chinese carbon saddles. If I had to rank them for my personal comfort, this is my ranking: #1 - Ryet X6P (carbon / 3d printed top) [note: I love this saddle. It fits me perfectly and I feel almost no discomfort even after finishing a century] #2 - Mixed 5D (carbon / eva top) #3 - Ryet (idk Superflow?, maybe) (carbon / eva top) #4 - Ryet Aircode (carbon / 3d printed top) I should point out, I've ridden century rides in every single one of those saddles (except the Mixed 5D, since I just rode with it for the first time this weekend). My oldest, the original Ryet Aircode, is the funniest one to me, because I find it rather uncomfortable for short rides. After 10-20miles my butt is a little sore and I would wonder why I hadn't removed it from my bike yet. Then, after 20mi, it just stopped bothering me. Every. Single. Time. I've never experienced anything like that. Of course, I did eventually remove it, because those other ones start out more comfortable and stay more comfortable.

Purchased: 2024-09-14

Picked up the Mixed 5D saddle recently. I have about 100 miles on it this week and I gotta say, this thing is awesome!

I don’t have any rides over 2 hours on it yet but I don’t see longer rides being a problem, although it is slightly firmer than I usually prefer, it’s shaped just about perfectly for my build and riding posture.

Purchase

Where to Buy

aliexpress.com
£16.63· 3 stores
View Deals

Specifications

Attributes

Weight135g
Shell Material
Rail Material
Rail Dimensions
Padding
Cutout
Nose Shape
Length
Width

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Used in Builds

LCR 018

LCR 018

LCR 018's Road LCR 18 with SRAM Force AXS, ProX C68DB wheels, and Continental GP5000 tires.

Road14 parts
Weight
7,406.0g
Price
€3,601

Questions about MIXED Full Carbon Fiber 5D Ultra Pack Light Weight Bike Saddle 143mm 135g for Road MTB Mountain Bicycle Carbon Seats

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