New Kestrel K 4000 PRO SL with Shimano Ultegra
Very Limited Qtys

Click to see enlarged photo
New Kestrel K 4000 PRO SL with Shimano Ultegra 2012

Detailed Specs | Geometry Sizing Chart

SALE $1649
Hurry, Ends At Any Time (when sales goal is met)

Special Kestrel Triathlon Bikes FINAL CLEARANCE PRICES, No more when sold out

Subscribe to our news letter for automatic updates on bikes arriving, specials, and pre-pay offers
Join the newsletter at to be notified when deals are available

Shimano Ultegra, 20 Speed Triathlon Bikes
2012 Kestrel
K4000 PRO SL Ultegra

Hurry, Ends At Any Time
(when sales goal is met)
(Compare at $4900)
Ships Signature Req'd for your protection

Complete Bicycle featuring:
Shimano Ultegra,
Carbon Cranks by Oval
Aero Bar and Stem,
Aero Wheelset by Oval

(700c except 47cm is 650c)

Save up to 60% Off List Prices
Buy Factory Direct from Bikesdirect

Compare to $6,000+ Trek or Specialized
Full Warranty

Use menus below to select size/color
Go thru Checkout for stock status
*Stock status shown prior to payment

Prices not applicable to previous purchase
Refunds only if oversold

Sizes (700c except 47cm is 650c wheel)

Geometry Sizing Chart
We accept Visa/MC/Disc/Amex. PayPal is optional
Price includes UPS Ground 48 States (5 to 7 Day Delivery) (AK,PR, HI additional cost)
(Email us for Shipments to PO Box/APO/FPO)

Pay with your US Issued Visa, MC, Disc, AMEX Cards. You do NOT need to use Paypal
Bikes come up to 90% assembled. How much Assembly? CLICK HERE for sample assembly instructions and videos
CLICK HERE for a special price on the full Video DVD/CD and Folding Mini ToolKit

A Kestrel Selected by Outside Magazine as Gear of the Year - click here for the article

Brand New Kestrel K4000 PRO SL Carbon Triathlon Bikes + Shimano Ultegra 20 Speed parts group

Kestrel says:
Put simply, the 4000 Pro is scary fast. It continues to pile up victories, triathlons and time trials alike. If speed is what you’re after, the Kestrel 4000 will deliver. Kestrel says, “The 4000 records better drag numbers than the Airfoil at all yaw angles, without a rider.”

Senior Triathlon Editor Aaron Hersh says:
"...Cervelo P3, Felt B12 and Scott Plasma 20. All three of these bikes have been proven to be aerodynamically efficient, although certainly not identical, and are spec’d with excellent components, similar to the 4000 Pro SL-Ultegra. The Kestrel rides smoother than the P3 and B12 and is a worthy competitor for these other outstanding (triathlon / time trial) bikes..."

Available now at an incredible Factory Direct discount. Limited quantities available now.
Full Factory Kestrel Warranty


Professional parts specs such as a near top-of-the-line 20 Speed Shimano Ultegra Drivetrain, Rear Derailleur, Dura Ace Shifters AND Aero Wheelset too.

Highest Quality Carbon
Since 1987, Kestrel has been meticulously hand-building their carbon frames using the tightest quality control standards in the industry. Their goal - perfecting the science of speed. Kestrel was the first to launch an all carbon bike and thus wrote the book on bicycle performance: weight, stiffness, efficiency, and even the shape of the bicycle itself. With 20 years of carbon fiber experience under their belts, Kestrel is a name you can feel confident in.

Superb Ride
Kestrel's geometry has been painstakingly refined to maximize ride comfort and handling grip. Every Kestrel frame comes with a matching, frame-specific fork that's engineered and ride tuned for perfectly balanced handling with a sensitive road feel and superb ride comfort.

The K4000 PRO SL uses Kestrel's unmatched carbon fiber know-how for a superior riding experience. Superb stiffness, superior strength, durability and Kestrel's legendary aerodynamic geometry lend to a road-smoothing ride with precise handling and efficient power transfer. Size-specific tuning optimizes the ride for every size, so you get the same precise handling with a responsive feel regardless of how big you are or where you ride.

The K4000 comes out of the gate with world-class results. One of the lightest and most aero Triathlon Bikes Kestrel offers. The K4000 features a unique carbon lay-up which offers both light overall weight and pedal power responsiveness. Its sculptured seat stays are designed to reduce road vibrations and offer unparalleled comfort to the rider. The K4000 is guaranteed to provide enjoyment for years to come and winning results for those who choose to race it.

Highest Technology
K4000 PRO SL is formed from a weight-shaving Carbon fiber hybrid into a Modular monocoque aerodynamic frame design.

Ever wonder what it’s like to ride the same bike the pros do? The new K4000 Pro SL is that bike. Hours of wind tunnel testing refined the smooth lines of the already wind cheating frameset. Kestrel bicycles is proud to present the new K4000 Pro SL.

The Kestrel K4000 is designed with one thing in mind: aerodynamics. Its innovative and unique design offers two major advantages over the competition. Firstly, by creating a radical, nearly “open” triangle, wind drag created by the rider’s movements was drastically reduced. So what’s that mean? It means the K4000 is at its best when being ridden and not just good in a wind tunnel. Secondly, the open triangle offers one of the most comfortable and compliant triathlon bikes. A dream to ride on.

With all the advantages of the open triangle Kestrel was still not satisfied. They wanted to improve on the design. They channeled the headtube to improve aerodynamics, in addition to increasing the crown to stiffen the front end. Then they redesigned the downtube and bottom bracket junction and improved the stiffness. This also improved the ride quality even more! The rear triangle uses 800K unidirectional carbon fiber which keeps the road vibrations to a minimum and improves aerodynamics as well. The final result? A lighter, faster bike that is also 20% stiffer than its predecessor.

Dual position Kestrel carbon, aero seatpost - forward position for a more aggressive seat angle and vice versa

Channeled headtube - improves aerodynamics, reduces, weight

Kestrel's proprietary blend of high modulus carbon fibers, these frames provide the lightest, best riding, while maximizing stiffness and handling response

FD (Fluid Design) - continuous flow of long filament fibers (the fluid lines of the modular monocoque design) provide a smooth and fluid ride that provides maximum stiffness.

Internal cable routing, bottom bracket rear brake - improves aerodynamics

A Kestrel Selected by Outside Magazine as Gear of the Year - click here for the article

Factory Direct Pricing
Other online retailers are selling comparably equipped bikes for $4,500 and up.
The frame and fork alone are sold by some for around $2400
The Shimano parts alone list for nearly $1000
About $3400 worth of parts alone without adding the TRP Brakes, Profile Aero bar, saddle, stem or seatpost which are easily worth another $1200.

Your Sale price includes shipping to 48 States.


MAIN FRAME, 800 K Hi-Modulus Carbon Fiber
REAR TRIANGLE, 800 K Hi-Modulus Carbon Fiber With Adjustable Dropouts


Kestrel EMS Pro TT Full Carbon, 1 1/8-1 1/4" Tapered Steerer


Shimano Ultegra, 10 Speed (20 gears total) rear and Shimano Ultegra, brazeon mount front


Shimano Dura Ace Bar End


TRP T-920, Aero / Profile ABS Carbon


Oval Concepts Sealed Precision Bearings


Oval Concepts Aero Section


Oval Concepts 900 Carbon 53/39T (47cm, 50cm: 170mm; 52.5cm 55cm: 172.5mm; 57.5cm, 59.5cm: 175mm)

Bottom Bracket

Oval Concepts Integrated w/BB30 Adapter


Shimano Ultegra, 11-25T, 10-sp/ KMC X10 Nickel Plated, 10-sp


Oval Concepts 700 Tri w/CrN-Ti rails


Kestrel Aero Carbon w/Ritchey Clamp System


Oval 700 3D Forged 7050 Alloy, 31.8mm, +/-6 degrees (47cm, 50cm: 90mm; 52.5cm, 55cm: 100mm; 57.5cm, 59.5cm: 110mm)


FSA No. 53, Integrated 1 1/8" Top, 1 1/4" Bottom w/10mm Carbon Top Cover w/ Cable Stop


PROFILE Ozero Base Bar/Profile T2 + Cobra Aerobar (47cm, 50cm, 52.5cm, 40cm; 55cm, 57.5cm, 59.5cm: 42cm) /Kestrel EVA Foam with Gel Padding



Wheelset/Tires 700c & 650c: Oval Concepts 535 Alloy Clincher, 35mm F & R, 10-sp / Hutchinson Atom Comp, 700x23c; Hutchinson Fusion 2 650x23c
Color As Listed
Sizes As Listed

Bikes come up to 90% assembled. How much Assembly? CLICK HERE for sample assembly instructions and videos
CLICK HERE for a special price on the full Video DVD/CD and Folding Mini ToolKit