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CBPXKOICHSAN
Planet X Koichi San II Elite Aero Carbon Track Bike Planet X Koichi San II Elite Aero Carbon Track Bike
In stock
Current Build Queue: 3 - 5 Working Days
From £2,499.99
In stock

Wind tunnel tested and found to be faster than the Cervelo T4 the Koichi San 2 doesn't care what your preferred track event is, it has been designed to excel at them all, Sprint, Keirin, Madison, Points, Scratch or Omnium.

  • Handbuilt Toray T800+HM carbon
  • Micro-adjust, rear facing dropouts
  • Carbon rear disc and quin spoke front wheels
  • Weight: 2.95kg complete frameset Full Description

Description

Built to deliver every single watt to the back wheel while helping you to cheat drag with an incredibly efficient frontal profile and design details. Just a quick swap of bars and stem allows you to switch the Koichi San between Sprint and Endurance track events. Wind tunnel tested back to back against the Cervelo T4 with an identical wheelset the Koichi San 2 delivered 11% lower drag, so you'll go faster and further on the Koichi San 2.

Massively oversized frame tubes blend together to provide maximum stiffness at every point on the frame. An oversized tapered fork and dropped headtube combine to offer enhanced steering precision more direct feedback as well as reduced frontal area compared to the koichi San V1. A threaded BSA bottom bracket provides a creak free interface to your engine, offering the perfect platform for all-out efforts.

A close clearance fork design is flared around the dropouts to provide smooth uninterrupted air flow across the front wheel delivering maximum aero advantage with tri-spoke and disk front wheels. A curved seat tube shields and surrounds the leading edge of the rear wheel, cutting drag and further improving your efficiency. Back-facing rear wheel dropouts are fitted with micro-adjust fittings and offer up to 50mm of for-aft adjustment for perfect chain tension.

Wheelset: Gipiemme track disc rear wheel and PX ceramic bearing quin spoke front wheel. A fast wheel pairing that slips through the air leaving a tiny footprint. Naturally both wheels are built for narrow tubular tyres for the most monimal contact point and lowest rolling resistance.

Every area of the Koichi San has undergone rigorous computer modeling and simulation to ensure it's the stiffest and most efficient frame possible that's why it's capable of delivering every watt to the back wheel and propelling you towards new PB's and the top step of the podium. In wind tunnel tests performed at the National Wind Tunnel facility the Koichi San 2 was shown to be 11.3% more efficient than the Cervelo T4 at 30mph. That's a huge chunk of change, close to an additional 8 watts. When victories are measured in 1/100s of a second can you afford not to be competing on the new Koichi San 2 Aero?

Full Spec

Custom options available
On components showing this spanner
Bar Tape Planet X Soft Touch Handlebar Tape / Black
Chain SRAM PC1 1/8" Single Speed Chain / 112 Links / Brown
Chainset Stronglight Track 2000 Crankset / 165 mm / Black Chainring / 49t
Handlebars Selcof Zeta 6061 Alloy Road Bar / 40cm / Matt Black / 31.8mm Clamp
Saddle Prologo Zero 2 Saddle / Tirox / Black
Stem Selcof Zeta 6061 Alloy Stem / 100mm / Matt Black / 10 degrees / 31.8mm
Track Cog On-One CNC Chromoly Screw-on Track Cog 1/8in/ 16t
Tyres Tufo S33 Pro Tubular Tyre / 700c / 21mm / Black
Wheel Front Planet X Five Spoke Carbon Aero Track Front Wheel / Tubular
Wheel Rear Planet X Carbon Rear Disc Wheel Track Or Road (No Logo) / Tubular
Head Set Planet X Headset Spacer Set / 1 1/8" / 15mm + 10mm + 5mm / Black  
Wheel Spare Planet X Valve Extender / 40mm / Red  
Frame Spare Selcof Carbon Steerer Fork Bung MK 2 / 1 1/8 inch  
Bottom Bracket Stronglight JP 400 JIS Bottom Bracket / 107mm / BSA Thread / Aluminium Cups  
Head Set FSA Orbit C-40 No.42 ACB Tapered Headset (OEM Only) / Black / 9 mm  

Key features

Koichi San II Track Frameset
Our fastest ever track frameset, wind tunnel tested and proven to be incredibly efficient beating the competition by upto 11%. Get fast with the Koichi San and hit the boards in style
Planet X Disc and Quin-spoke Wheelset
Faster than deep section aero wheels our Quin-spoke front wheels spins on ceramic bearings and offers blistering speed. Our fastest full-carbon disc rear wheel completes this pairing offering minimal drag and maximum aero performance.
Direct To Customer
We supply everything we make direct to customer, there's no middle men or wholesalers adding anything to the cost. That's why we're able to offer you unmatched value for money- straight from our warehouse to your door
Yorkshire Born and Bred
Our bikes are designed, tested and assembled in Yorkshire. Every model is put through its paces across the toughest road or off-road routes that the Peak District has to offer. Just like us, they are Yorkshire Born and Bred

Geometry

Geometry

Size & Specs

Bike frame geometry
  S/49cmM/51cmL/54cmXL/56cm
AHead Angle (degrees)72.572.572.572.5
B Head Tube (mm)8590105125
C Top Tube C-C Effective(mm)517536558574
D Seat Tube Angle (degrees)75.075.075.075.0
E Seat Tube C-T (mm)473477492512
F Chainstays (mm)380380380380
G BB Drop (mm)35353535
I Stack (mm no spacers)xxxx
J Reach (mm, no stem)xxxx
K Front Centre (mm)560579601618
L Fork Length (mm)368368368368
M Trail (mm)35353535
O Wheelbase (mm)932951974991
If you're unsure about the size you need, please call our customer services team to see if we can help +44 (0)1709 38 66 66

Need help? Call our technical experts

01709 386 666

Custom build option available
add to basket and customise
Build your bike in 3 simple steps.
Step 1: Select bike size and colour (by choosing a frame)
Frame View size guide Stock
Large Black and Red Large Black and Red £2,499.99 In Stock
Medium Black and Red Medium Black and Red £2,499.99 In Stock
Small Black and Red Small Black and Red £2,499.99 In Stock
XLarge Black and Red XLarge Black and Red £2,499.99 In Stock
Step 2: Choose your options

Need help?

Call our technical experts on: 01709 386666

Choose Components

Bar Tape Add the finishing touch to your bike by customising the colour of your bar tape - Make it unique!
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Planet X Soft Touch Handlebar TapeBlack  FREE i
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Selcof Cork Plus Embossed Bar TapeBlack £2.00 i
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Selcof Cork Plus Bar TapeBlack £2.01 i
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Selcof Eolo Soft Bar TapeFluro Yellow £3.01 i
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Selcof Eolo Soft Bar TapeWhite £3.01 i
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Selcof Eolo Soft Bar TapeFluro Green £3.01 i
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Selcof Eolo Soft Bar TapeBlack £3.01 i
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Selcof Grip Evo Bar TapeBlack £4.01 i
Chain
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SRAM PC1 1/8" Single Speed Nickel Chain112 Links  FREE i
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SRAM PC1 1/8" Single Speed Chain112 Links | Brown  FREE i
Chainset We offer various tooth ratios and crank arm lengths. Make sure your bike is suited to your riding type
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Stronglight Track 2000 Crankset165 mm | Silver Chainring | 44t  FREE i
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Stronglight Track 2000 Crankset170 mm | Black Chainring | 48t  FREE i
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Stronglight Track 2000 Crankset165 mm | Black Chainring | 49t  FREE i
Select
Stronglight Track 2000 Crankset170 mm | Silver Chainring | 48t  FREE i
Select
Stronglight Track 2000 Crankset170 mm | Black Chainring | 44t  FREE i
Select
Stronglight Track 2000 Crankset165 mm | Black Chainring | 48t  FREE i
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Stronglight Track 2000 Crankset165 mm | Silver Chainring | 48t  FREE i
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Stronglight Track 2000 Crankset165 mm | Black Chainring | 44t  FREE i
Frame
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Planet X Koichi San II Aero Carbon Track FramesetLarge | Black and Red  FREE i
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Planet X Koichi San II Aero Carbon Track FramesetXLarge | Black and Red  FREE i
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Planet X Koichi San II Aero Carbon Track FramesetSmall | Black and Red  FREE i
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Planet X Koichi San II Aero Carbon Track FramesetMedium | Black and Red  FREE i
Handlebars Our standard build is usually perfect but you can choose a bar that suits your needs.
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Selcof Zeta 6061 Alloy Road Bar40cm | Matt Black | 31.8mm Clamp  FREE i
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Selcof Zeta 6061 Alloy Road Bar38cm | Matt Black | 31.8mm Clamp  FREE i
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Selcof Zeta 6061 Alloy Road Bar42cm | Matt Black | 31.8mm Clamp £4.99 i
Saddle Have a preference on saddle design or simply want a lighter saddle? Upgrade now!
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Planet X Exocet SaddleTi Rail | Black  FREE i
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Prologo Kappa 3 SaddleSTN Cromo | Black  FREE i
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Prologo Zero TRI PASSTN Cromo | Black  FREE i
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Prologo Zero 2 SaddleTirox | Black  FREE i
Stem Our standard build is normally great, but you can change the geometry of your ride and get the right fit - choose the stem length that's right for you.
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Selcof KA04 Aluminium Stem31.8mm | 110mm | Black  FREE i
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Selcof Zeta 6061 Alloy Stem90mm | Matt Black | 10 degrees | 31.8mm  FREE i
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Selcof Zeta 6061 Alloy Stem100mm | Matt Black | 10 degrees | 31.8mm  FREE i
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Selcof Zeta 6061 Alloy Stem80mm | Matt Black | 10 degrees | 31.8mm  FREE i
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Selcof Zeta 6061 Alloy Stem130mm | Matt Black | 10 degrees | 31.8mm  FREE i
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Selcof Zeta 6061 Alloy Stem120mm | Matt Black | 10 degrees | 31.8mm  FREE i
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Selcof KA05 Aluminium Stem31.8mm | 110mm | Black £2.99 i
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Selcof KA05 Aluminium Stem31.8mm | 100mm | Black £2.99 i
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Selcof Ultra Carbon Aero Road Stem110mm | Black | 31.8mm £65.00 i
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Selcof Ultra Carbon Aero Road Stem90mm | Black | 31.8mm £65.00 i
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Selcof Ultra Carbon Aero Road Stem100mm | Black | 31.8mm £65.00 i
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Selcof Ultra Carbon Aero Road Stem80mm | Black | 31.8mm £65.00 i
Track Cog
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On-One CNC Chromoly Screw-on Track Cog 1/8in/ 15t  FREE i
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On-One CNC Chromoly Screw-on Track Cog 1/8in/ 18t  FREE i
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On-One CNC Chromoly Screw-on Track Cog 1/8in/ 14t  FREE i
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On-One CNC Chromoly Screw-on Track Cog 1/8in/ 22t  FREE i
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On-One CNC Chromoly Screw-on Track Cog 1/8in/ 17t  FREE i
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On-One CNC Chromoly Screw-on Track Cog 1/8in/ 13t  FREE i
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On-One CNC Chromoly Screw-on Track Cog 1/8in/ 20t  FREE i
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On-One CNC Chromoly Screw-on Track Cog 1/8in/ 16t  FREE i
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On-One CNC Chromoly Screw-on Track Cog 1/8in/ 12t  FREE i
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On-One CNC Chromoly Screw-on Track Cog 1/8in/ 19t  FREE i
Tyres
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Tufo S33 Pro Tubular Tyre700c | 21mm | Black  FREE i
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Tufo S3 Pro Tubular Tyre700C | Black | 21 mm £10.00 i
Wheel Front
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Planet X Five Spoke Carbon Aero Track Front WheelTubular  FREE i
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Planet X Five Spoke Carbon Aero Ceramic Bearing Track Front Wheel700c | Matt Black and White | Tubular £100.01 i
Wheel Rear
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Planet X Carbon Rear Disc Wheel Track Or Road (No Logo)Tubular  FREE i
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Planet X Carbon Track Rear Disc WheelTubular £99.99 i

Optional Accessories

Shoes Poorly fitting shoes are not only uncomfortable but can cause serious injury - Treat your feet to a new pair of our best value shoes
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NO THANKS  FREE
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Planet X 365X Pro Carbon Vernice Road ShoeSize 42 | White and Black £99.99 i
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Planet X 365X Pro Carbon Vernice Road ShoeSize 45 | White and Black £99.99 i
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Planet X 365X Pro Carbon Vernice Road ShoeSize 41 | White and Black £99.99 i
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Planet X 365X Pro Carbon Vernice Road ShoeSize 40 | White and Black £99.99 i
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Planet X 365X Pro Carbon Vernice Road ShoeSize 43 | White and Black £99.99 i
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Planet X 365X Pro Carbon Vernice Road ShoeSize 39 | White and Black £99.99 i
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Planet X 365X Pro Carbon Vernice Road ShoeSize 47 | White and Black £99.99 i

Please confirm your brake set up

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Please confirm that this is what you want. If you have bought a Full Monty or London Road Please ensure you have selected the correct fork colour for your frame

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