Zipp Service Course B2 Seatpost - 27.2 x 350 mm, 20 mm Setback, Black
The Zipp Service Course B2 seatpost combines a one-piece 3D-forged AL-7050 aluminum body with a low-profile, dual-bolt clamp for precise saddle positioning. This bead-blast black version measures 27.2 mm in diameter and 350 mm long, with 20 mm of setback.
Features
- Low-profile micro-adjust cradle allows fine saddle angle and fore-aft adjustment.
- One-piece 3D-forged AL-7050 aluminum construction.
- Stainless steel hardware.
- 20 mm setback for riders whose fit calls for a rearward saddle position.
Specifications
- Model: Service Course B2
- Diameter: 27.2 mm
- Length: 350 mm
- Setback: 20 mm
- Finish: Bead Blast Black
- Material: aluminum
- Clamp: dual-bolt micro-adjust, standard saddle rails
- Minimum insertion: 90 mm
- Listed weight: 245 g
- Manufacturer part number: 00.6818.048.002
- UPC: 710845862267
Fit and installation
Choose this post only for a compatible frame requiring a 27.2 mm seatpost. Check your required saddle height, available insertion depth, saddle rail dimensions and desired setback before ordering. It is a rigid seatpost, not a dropper or suspension post. The listing specifies standard rails; compatibility with oval carbon rails is not confirmed.
Maintain at least 90 mm of insertion, and follow any greater insertion requirement specified by the frame manufacturer. Use the current Zipp and frame instructions for clamping torque and assembly compound. Do not assume that a larger seat tube is compatible without a frame-approved shim.
What's included
One Zipp Service Course B2 seatpost with its saddle clamp and hardware. Saddle, frame seatpost collar, installation tools and assembly supplies are not included.
Mechanic compatibility guide
Which exact item is this? Zipp Service Course B2, 27.2 mm diameter, 350 mm length, 20 mm setback, Bead Blast Black, AL-7050 aluminum; MPN 00.6818.048.002; UPC 710845862267. This is not the carbon Service Course SL.
What frame dimensions must match? The frame must accept a 27.2 mm seatpost. Confirm the frame's required insertion, maximum insertion depth and the rider's saddle height. The post requires at least 90 mm insertion; obey any greater frame requirement.
Which saddle rails fit? The supplier specifies standard rails and a dual-bolt micro-adjust clamp. Exact rail cross-section limits and compatibility with oval carbon rails are not verified. Ask for the saddle model and rail dimensions before confirming fit.
Which setups should not be assumed compatible? Frames requiring another post diameter, proprietary/aero posts, insufficient insertion clearance, and saddles with unverified rail shapes. A shim requires frame-manufacturer approval. This post has no suspension or dropper function.
What is supplied and what is separate? One seatpost with saddle clamp and hardware. Saddle, frame collar, tools and assembly supplies are separate.
What installation details remain to verify? Consult the current Zipp instructions and frame manual for clamp torque, assembly compound and any use restrictions. Torque values, oval-rail approval, rider-weight limits and model-specific bicycle fit are not established by the supplier listing.
What should the rider provide before a fit decision? Bike make, model and year; specified seatpost diameter; frame insertion limits; present saddle height; saddle model and rail dimensions; and the setback required by their fit.
