The ERider-T17N is a bottom-bracket torque sensor and crankset for 83mm shells (mountain and fat bikes). 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 83mm bottom-bracket shells (mountain/fat bikes) · 4-bolt 104mm spider
• Includes 0 Q-factor 170mm crank arms (chainrings not included)
• Side cable exit — no frame drilling
• 18-pole, 2-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). Some ERider setups can get intermittent cutout from controller noise, solved by grounding the frame.