Header Background

Harley Davidson 1250 Night Rod / V-Rod / Sportster from 2021 1250 Sportster S 121 hpChip Tuning

CarsTrucksBikes / QuadJet ski'sMotorboats

Harley Davidson chip tuning performance data calculator

1250-sportster-s-121-hp

Horsepower (HP)
Original121
Stage 1
129+8 HP
Stage 2
In Development
Torque (NM)
Original125
Stage 1
133+8 NM
Stage 2
In Development
Max Component Potential (Stage 2)98.4% Efficiency