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Background: Functional electrical stimulation (FES) treatment is becoming an increasingly studied intervention topic. To date, the majority of studies evaluate the use of FES with gait analysis, and there are few studies which utilized FES during cycling. Intervention: This case report evaluates FES treatment utilized for a five-year old boy with quadriplegia spastic cerebral palsy. FES treatment was initially used in conjunction with the RT300 cycling machine, and we then had the child transition to performing treatment sessions on the RT600 elliptical stepper machine. Outcome Measures: We utilized outcome measures directly related to performance during the RT300 and RT600 treatment sessions. Our patient was able to obtain a small degree of power output, 0.11 Watts, by the end of our RT300 treatment, indicating some volitional contribution to the cycling. Average percentage of weightbearing increased from 17% to 31.5% over the RT600 treatment sessions, and average stimulation in microcoulomb was increased over both the cycling and elliptical stepper treatments. Discussion: There may be variations in response to FES treatment depending at which Gross Motor Function Classification System (GMFCS) level the patient is classified, as this is indicative of a spectrum of physical impairments. Additionally, future studies may find it beneficial to incorporate both FES-specific outcome measures as well as valid and reliable objective outcome measures. FES may serve as a tool for incorporating physical activity and resultant overall health benefits into the lives of patients with higher mobility impairments.