CrankSmith Pro v3.0
The Mechanic's
Logic Engine
Not a toy. A professional configuration tool for performance cyclists. Validate compatibility, calculate physics, and engineer your dream build with precision.
Strict Validation
Axle, Drivetrain, & Geo Gates
Real-time Physics
Weight, Speed & Ratio Calc
Deep Compatibility
Cross-brand "Mullet" Support
The Axle Gate
We don't just match names. We match interfaces. Boost 148 vs 142, Thru-Axle vs QR. If the hub spacing doesn't align, the build fails.
Weight Weenie Logic
Every bolt counts. Our database tracks gram-level weight for every component, giving you a live running total as you swap parts.
Capacity Guardrails
Exceeding your derailleur's tooth capacity? Mixing electronic and mechanical? The engine flags it immediately with detailed conflict reports.