Ritchey Road Logic Disc Frameset: Nigri 5

Steeped with more than 50 years of frame-building heritage, innovation, exploration, and lots of riding, the classic lines of this beautiful steel frame and carbon fiber fork unite with modern building techniques and proven materials to deliver a contemporary bicycle that’s wonderfully comfortable for long days in the saddle, nimble and stiff enough to win the sprint for that sign, and adequately adaptable to endure roads that might lack proper pavement.

The Road Logic Disc frame is built with a heat-treated and triple-butted Ritchey Logic tubeset designed specifically for the Road Logic. It features aggressively short-butted sections optimized for TIG welding that save weight and improve ride quality. The frameset also includes a Ritchey WCS Carbon Road Fork for precise handling and responsiveness.

Updated for 2024, this modern classic now sports compatibility with Shimano’s newest Di2 semi-wireless groupsets. A new drive side dropout design allows for concealed wire routing from the battery in the seat tube, through the bottom bracket area into the chainstay where it makes a stealthy exit to the rear derailleur. But mechanical shifting fans, rejoice - the Road Logic Disc frame retains cable stops for mechanical groupsets. On the non-drive side chainstay sits a new one-piece truss design for flat mount brakes - providing as much stiffness and strength of previous mounts while reducing chainstay weight significantly.

With purpose-driven design, unyielding attention to detail, and modern features, the new Road Logic Disc almost telepathically delivers an amazing ride experience unlike any other bike. It’s fast, nimble, comfortable, and perfectly suited for wherever your rides take you.

FEATURES
WCS LOGIC TUBING
Ritchey's proprietary and triple-butted steel tubing developed specifically for the TIG welding process to Tom's specifications.
INTEGRATED CARBON CROWN
Sleek integration with Ritchey headsets and the added benefit of reducing stress at the steerer crown interface.

TECH SPECS
FRAME
Material - heat-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 - 49mm
Bottle cage mounts - 2
Stealth wire routing for semi-wireless Di2 groupsets
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 max spacing - 39mm
Fork max spacing - 40mm
BRAKE COMPATIBILITY
Flat-mount brakes front and rear - 140mm (160mm max - adaptors available separately)
Frame flat-mount bracket height - 10mm
DETAILS
Sizes - 51 / 53 / 55 / 57 / 59cm
Frame weight - 1,940g (size 55 - w/o thru-axle)
Fork weight - 420g (with uncut steerer / not including axle)
Colour - Nigiri