

⚡ Ride Light, Ride Right — Precision Meets Performance
The Zipp Service Course B2 Seatpost is a 27.2x350mm zero-offset seatpost engineered from 3D forged AL-7050 aluminum, weighing only 245g. Featuring a low-profile dual bolt micro-adjust clamp for precise saddle positioning, it combines lightweight durability with a scratch-resistant bead blast black finish. Designed for competitive cyclists seeking optimal power transfer and comfort, it supports a minimum insertion of 90mm and includes stainless steel hardware for long-lasting performance.
| ASIN | B08NPV3SDG |
| Best Sellers Rank | #168,532 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #111 in Bike Seat Posts |
| Brand Name | Zipp |
| Customer Reviews | 4.8 4.8 out of 5 stars (41) |
| Date First Available | November 20, 2020 |
| Included Components | Seatposts |
| Item Dimensions LxWxH | 16.4 x 1.8 x 6 inches |
| Item Package Dimensions L x W x H | 15.43 x 6.5 x 2.72 inches |
| Manufacturer | Zipp Speed Weaponry |
| Model Name | Service Course Seatpost |
| Model Year | 2021 |
| Number of Items | 1 |
| Package Weight | 0.32 Kilograms |
| Part Number | 102303 |
| Size | 27.2x350mm |
| Style | Seatposts |
| Suggested Users | mens |
| UPC | 710845862281 |
| Warranty Description | Limited Warranty |
S**T
Chipped, but I can't be mad...
This is quite a nice seatpost. It came with a small chip on the clamp, making me think it was a returned item, but it's such a nice seatpost I can't even be mad about it. It has a seemingly generic tilt adjustment mechanism but it works incredibly well. Micro adjustments are a piece of cake. And it's quite sturdy, as well. I definitely recommend! (And the chip isn't so bad that a black Shapie marker can't take care of it)
L**.
Great seat post with zero setback (if that is what you need)
I needed a seat post with zero setback. This was perfect and has allowed me to get my bike dialled in to match a fit I had done on a different bike. Easy to fit and solid.
R**H
I find this style of seat clamp is easier to adjust
I find this style of seat clamp is easier to adjust tilt and stays more secure then others. I would buy again!
D**N
Great seatpost
Fits well and adjusts easily
S**E
Another great Zipp product
Fits 27.2 as designed, looks great and the 2 bolt system makes minute angle adjustments very easy.
J**S
Only on one side
The zip logo is only on one side I haven’t installed it yet but looks good
E**S
Great fit for me
Needed a zero offset basic seatpost to replace my stock one. Bike is a 2003 lemond big sky sl. Lighter than OEM too.
P**K
Quality parts
Sweet part sweet price
Trustpilot
2 weeks ago
5 days ago