ERider73-T17 BB with 4 Arm Spider/Claw

The ERider-T17N is a bottom-bracket torque sensor and crankset for 73mm shells. Its cable exits the side of the cartridge, so there's no drilling through your frame. It measures both left and right pedal torque for a smooth, responsive PAS, with quadrature cadence for CA3 back-pedal regen where applicable.

Specs:

• Fits 73mm bottom-bracket shells · 4-bolt 104mm spider
• Includes 0 Q-factor 170mm crank arms (chainrings not included)
• Side cable exit — no frame drilling
• 18-pole, single-wire cadence sensor
• 1.5–3.5V torque output, 70 Nm/V scaling
• 90cm cable, JST-SM connector — plug-and-play with the V3 Cycle Analyst

Note: the latest 4-bolt 104mm spider no longer fits 68mm BCD chainrings (limited older stock — ask us).