--- product_id: 324940631 title: "Service Course Seatpost 27.2mm 350mm 0mm Offset Bead Blast Black" brand: "zipp" price: "¥17471" currency: JPY in_stock: true reviews_count: 8 category: "Zipp" url: https://www.desertcart.jp/products/324940631-service-course-seatpost-27-2mm-350mm-0mm-offset-bead-blast store_origin: JP region: Japan --- # Dual bolt micro-adjust clamp 3D forged AL-7050 aluminum strength 245g ultra-lightweight Service Course Seatpost 27.2mm 350mm 0mm Offset Bead Blast Black **Brand:** zipp **Price:** ¥17471 **Availability:** ✅ In Stock ## Summary > ⚡ Ride Light, Ride Right — Precision Meets Performance ## Quick Answers - **What is this?** Service Course Seatpost 27.2mm 350mm 0mm Offset Bead Blast Black by zipp - **How much does it cost?** ¥17471 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/324940631-service-course-seatpost-27-2mm-350mm-0mm-offset-bead-blast) ## Best For - zipp enthusiasts ## Why This Product - Trusted zipp brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Crafted from aerospace-grade AL-7050 aluminum with stainless steel hardware for unmatched strength and reliability. - • **Featherweight Power:** At just 245g, this seatpost shaves grams without sacrificing durability—race-ready lightness. - • **Rugged Matte Finish:** Bead blast black finish resists scratches and corrosion, keeping your ride looking sharp mile after mile. - • **Sleek Zero Offset Design:** 0mm setback for optimal power transfer and aggressive riding posture—no compromises. - • **Precision Fit, Every Ride:** Innovative dual bolt micro-adjust cradle lets you dial in saddle position with surgical accuracy. ## Overview 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. ## Description Upgrade your road bike with the Zipp Service Course Seatpost - a perfect blend of lightweight performance, durability, and precision fit. Crafted from high-grade AL-7050 aluminum, this seatpost offers exceptional strength-to-weight ratio, ensuring reliable support during demanding rides. Its bead blast black finish provides a sleek, professional look that complements any bike aesthetic. Materials & Engineering Manufactured through 3D forging from a single piece of AL-7050 aluminum, the Zipp Service Course Seatpost guarantees rigidity and resistance to fatigue. The stainless steel hardware enhances durability and corrosion resistance, making it ideal for both training and competitive cycling. Performance & Components Featuring a low-profile dual bolt clamp, this seatpost allows for micro-adjustment in the for-aft position, ensuring a precise and secure saddle fit. The clamp's innovative design minimizes interference with the rider's movement while maintaining maximum strength. With a minimum insertion depth of 90mm, the post provides versatile setup options for optimal saddle height and angle. Style & Use Case Designed specifically for road cycling enthusiasts, the Zipp Service Course Seatpost combines functional engineering with a sleek bead blast black finish. Its 27.2mm diameter makes it compatible with most standard road bike frames. Whether you're building a new race bike or upgrading your existing setup, this seatpost enhances both style and performance. Key Features: - Diameter: 27.2mm for compatibility with most road frames - Length: 350mm, adjustable for personalized saddle positioning - Offset: 0mm, designed for a centered saddle height and alignment - Crafted from AL-7050 aluminum with a bead blast black finish - Dual bolt, low-profile micro-adjust cradle for refined saddle positioning - UV-resistant stainless steel hardware for long-lasting strength - Minimum insertion length: 90mm ensures versatility in setup Elevate your cycling experience with Review: 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) Review: 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! ## Features - Lightweight and durable AL-7050 aluminum construction ensures strength and longevity while reducing overall bike weight for enhanced performance on the road. - Innovative low-profile dual bolt micro-adjust clamp allows for precise fore-and-aft saddle positioning, improving rider comfort and optimal bike fit. - Bead Blast Black finish provides a sleek, modern style with superior corrosion resistance, making it ideal for both daily commuting and competitive cycling. - 350mm length with a 27.2mm diameter and zero offset design offers versatility for various bike frames and riding styles, from endurance rides to professional racing. - Engineered with stainless steel hardware and forged from a single piece of aluminum, this seatpost combines performance, engineering excellence, and affordability for serious cyclists. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08NPV3SDG | | Best Sellers Rank | #91,789 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #63 in Bike Seat Posts | | Bike Type | Road Bike | | Brand | Zipp | | Brand Name | Zipp | | Color | Bead Blast Black | | Customer Reviews | 4.8 out of 5 stars 44 Reviews | | Included Components | Seatposts | | Item Dimensions W x H | 1.07"W x 13.78"H | | Item Weight | 0.5 Pounds | | Manufacturer | Zipp Speed Weaponry | | Manufacturer Part Number | 102303 | | Material | Aluminum | | Material Type | Aluminum | | Model Number | 102303 | | Product Dimensions | 1.07"W x 13.78"H | | UPC | 710845862281 | | Unit Count | 1.0 Count | | Warranty Description | Limited Warranty | ## Product Details - **Brand:** Zipp - **Color:** Bead Blast Black - **Item Weight:** 8 ounces - **Material:** Aluminum - **Product Dimensions:** 1.07"W x 13.78"H ## Images ![Service Course Seatpost 27.2mm 350mm 0mm Offset Bead Blast Black - Image 1](https://m.media-amazon.com/images/I/41oYio+RZHL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Chipped, but I can't be mad... *by S***T on October 2, 2025* 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) ### ⭐⭐⭐⭐⭐ I find this style of seat clamp is easier to adjust *by R***H on June 9, 2025* I find this style of seat clamp is easier to adjust tilt and stays more secure then others. I would buy again! ### ⭐⭐⭐⭐⭐ Great seatpost *by D***N on June 10, 2025* Fits well and adjusts easily ## Frequently Bought Together - Zipp Service Course B2 Seatpost Black/0mm Setback, 27.2x350mm - Cinelli Cork Ribbon Bicycle Handlebar Tape in Multiple Colors - Zipp Service Course B2 Stem Black, 100mm/6 deg --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/324940631-service-course-seatpost-27-2mm-350mm-0mm-offset-bead-blast](https://www.desertcart.jp/products/324940631-service-course-seatpost-27-2mm-350mm-0mm-offset-bead-blast) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-08*