Frame
Materialheat-treated, triple-butted Ritchey Logic steel tubing – TIG welded
Ultra-light forged and machined straight 1-1/8″ headtube
Electrophoretic Deposition (ED Coat) treated for corrosion resistance
Seat tube clamp size 28.6mm (2.5Nm max for derailleur clamps and chain guides)
27.2mm seat tube with integrated seat collar (max torque setting: 6Nm)
Bottom bracket 68mm – English threaded
142mm spacing (12mm alloy thru-axle included)
Crankset min/max ring size – single 36 to 50t / double: 46/30t to 53/39t
Can accommodate 1X or 2X chainrings
Chainline 44mm
Bottle cage mounts 2
Stealth wire routing for semi-wireless Di2 groupsets
Only compatible with Shimano Di2 EW-SD300 wire for 12-speed.
Includes stops/guides for brake hoses and mechanical groupsets
External cable routing
WCS headset included (upper IS42/28.6 – 16mm stack height | lower IS42/30)
Replaceable stainless-steel derailleur hanger
Fork
Ritchey WCS Carbon Disc Road Fork included
1-1/8″ straight steerer with integrated 45-degree crown race
Steerer length 300mm
Axle-crown 371mm
Rake/Offset 46mm
100mm spacing (12mm alloy thru-axle included)
30mm maximum spacers below stem
Tire Compatibility
Wheel and tire compatibility 700 x 30c tire clearance (depending on tire/rim manufacturer)
Frame spacing 39mm
Fork spacing 40mm
Brake Compatibility
Flat-mount brakes front and rear 140mm (160mm max – adaptors available separately)
Frame flat-mount bracket height 10mm
Details
Sizes51 / 53 / 55 / 57 / 59cm
Frame weight 1,940g (size 55 – w/o thru-axle)
Fork weight 420g (with uncut steerer / not including axle)
Color Nigiri


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