The S-Works Rapide Post is engineered to reduce drag where airflow is highest. Using our Moving Leg Mannequin, we discovered pedaling drives high speed air directly onto the post, making it a critical aero surface. A deeper profile with reduced frontal area and our thinnest section ever in this zone delivers cleaner flow and improved aero performance, while our refined FACT carbon layup preserves balanced compliance for all day comfort. D‑Shape design and optimized lay-up construction deliver the most aerodynamic and comfortable seat post.
FACT carbon construction blends durability with comfort.
Lightweight, precision-engineered saddle hardware enables fast, accurate, effortless adjustments.
Fits Tarmac SL9, Crux 5 & Tarmac SL8
Available in four sizes: 330mm x 0 offset, 380mm x 0 offset, 330mm x 20mm offset, 380mm x 20mm offset
System Weight Limit: 275lbs / 125kg
At Chain Reaction, we aim to deliver your order as quickly as possible.
- Free Shipping on Gear: Orders over $139 (excludes Bikes & Bulky items)
- Delivery Times:
In-Store Items: Arrive in 2–3 business days (extra 2 days for rural).
Supplier-Only Items: May take up to 7 business days, depending on the supplier. - Selected Bikes:
Nationwide shipping for select bikes: $60 or free pick-up from our Christchurch store.
Shipped bikes require some assembly. Picked-up bikes are fully built and ready to ride. - Click & Collect: Available for most products. Collect at 4/218 Moorhouse Ave, Christchurch.
- Dangerous Goods: Items like batteries and aerosols may incur additional fees due to safety regulations.
- Returns: Changed your mind? Return unused items in original packaging within 14 days for a refund (shipping costs excluded).
For full details, visit our Shipping Page.
