Service & Maintenance
Oil services, inspections, scheduled maintenance, troubleshooting, and dependable repair work.
Council Bluffs, Iowa Motorcycle Performance Shop
Expert motorcycle service, performance upgrades, diagnostics, tires, custom work, and professional Dynojet tuning.
20+ Years Experience
Master Technician
Dynojet 250i
What We Do
Motorcycle Service Built Around Performance
From routine maintenance to full performance builds, your motorcycle gets experienced, detail-focused care.
Performance Upgrades
Cams, exhaust, intake, engine upgrades, fuel systems, drivetrain work, and complete performance packages.
Dyno Tuning
Professional Dynojet tuning for improved power, throttle response, rideability, and engine protection.
Diagnostics
Electrical, fuel-injection, drivability, mechanical, and performance problem diagnosis.
Tires & Chassis
Motorcycle tire installation, wheel service, suspension work, brakes, bearings, and chassis repairs.
Audio & Custom Work
Motorcycle audio, accessories, lighting, handlebars, comfort upgrades, and personalized custom work.
DYNOJET
250i
Chassis Dyno
Professional Dyno Tuning
Real Results. Measured and Proven.
O’Neal Speed & Performance uses a Dynojet 250i with load control to tune for more than a peak horsepower number. The goal is strong, safe performance throughout the entire riding range.
- Air/fuel ratio verification
- Part-throttle and wide-open-throttle tuning
- Throttle response and drivability improvement
- Before-and-after dyno results
- Performance troubleshooting under load
Experienced. Independent. Focused.
Built by a Technician, Not a Sales Department
O’Neal Speed & Performance is an independent motorcycle shop built on more than two decades of hands-on Harley-Davidson service and performance experience.
Owner and Master Technician “Dyno Doug” O’Neal brings the same professional-level diagnosis, repair, and tuning experience to every motorcycle—without the dealership runaround.
Straight answers. Quality work. Performance you can feel.
Schedule Service
Let’s Talk About Your Motorcycle
Call, email, or use the form to request service. Include the year, make, model, and what you would like done.
Shop Hours
Monday10:00 AM–5:00 PM
Tuesday–Friday9:00 AM–5:00 PM
Saturday10:00 AM–5:00 PM
SundayClosed