Select the product you are interested in, click delivery, type in your postcode, and select Bike Delivery. If this is not available there is no available stock nearby.
Order Confirmation
Once your order is placed we will be in contact with you within 2 hours to confirm your order.
Bike Build
Your bike will be built up at your local 99 bikes by one of our expert mechanics and safety checked prior to delivery.
Delivery
Your bike is delivered to your door by a 99 Bikes expert who will walk you through your new bike and answer any questions you may have.
At 99 Bikes, we offer multiple delivery options to suit your needs. Here’s a quick overview:
Click & Collect: Order online and pick up your item from a nearby store — free and often same-day!
Standard Delivery: Available for most parts and accessories.
Estimated delivery:
Metro: 2–14 business days
Regional & Remote: Up to 21 business days
Express Delivery: Available for most parts and accessories.
Estimated delivery:
Metro: 1–6 business days
Regional & Remote: Up to 21 business days
Boxed Bike Delivery: For selected bikes. Delivered boxed to your address and ready to be assembled in 1 - 2 weeks.
Note: Delivery times are an estimate and actual delivery times may vary based on public holidays and peak periods. Bulky items may take longer.
For full details, delivery estimates and more information, please visit our
Shipping & Delivery Info page.
The Castelli Free Aero Race 4 Bibknicks were designed to perform at the highest level, using some of Castelli's best technology to form Castelli's top of the line raceday kit. Comfort meets performance with a design that is at home on raceday with an added touch of comfort so that you can really test your limits. The Vortex BLC Textured fabric offers improved aerodynamics, while the combination of Pro Lycra® fabric improves comfort with great stretch and rebound, as the Doppio V construction in the front gives you enhanced support and comfort.
The Progetto X2 Air Seamless pad gives you all day comfort so that you can spend hours in the saddle. The Giro4 leg gripper will ensure these bibknicks stay in place, while the mesh straps are comfortable and breathable. The Castelli Free Aero Race 4 Bibknicks are built for WorldTour racing performance so they will be more than capable of handling on riding or racing challenges you may have.
Features
Vortex dimpled fabric on legs for aero performance
Forza fabric on inner legs with 38% Lycra® content for perfect fit
Stripe mesh engineered minimalist bib construction keeps you cool
Giro4 leg gripper elastic for better grip distributed over larger area
Doppio V construction in front for increased support and comfort
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