25+ Years Harley-Davidson Experience
Engine Work
Big bore kits · Stroker builds · Cam installs · Head porting · Full custom builds
When it comes to Harley-Davidson engine work, Crystal City MotorWorx is the Southern Tier's most experienced builder. With over 25 years working exclusively on Harley-Davidson motorcycles, we have built and dyno tuned everything from mild stage upgrades to full 135 cubic inch motors and turbocharged builds.
Every engine build at Crystal City MotorWorx is backed by our in-house Dynojet dynamometer. We don't guess — we tune. When your motor leaves our shop, it has been properly mapped for fuel, ignition timing, and air/fuel ratio, with before and after dyno sheets to prove it.
Whether you're looking for more torque out of your stock 117, a 128 stroker, or a fully built 132 with ported heads — we'll build it right and tune it to match.
Our Engine Work
- +Big bore kits
- +Stroker kits
- +Head porting & valve work
- +Cam installs
- +Complete engine rebuilds
- +Top-end rebuilds
- +Turbo builds
- +All V-twin platforms
- +Dyno tuned after every build
Builds We Have Done
117 ci
Stage upgrades, cam, intake, and exhaust combinations on the stock 117.
121 ci CVO
CVO platform tuning and performance builds.
124 ci
Big bore 124 builds with head work, cam, and full dyno tuning.
128 ci
Popular stroker configuration — built and tuned dozens of 128s.
129 ci
Custom 129 packages including HPI, CR480, and Bassani combinations.
131 ci
High performance 131 builds with ported heads and aggressive cams.
132 ci
Full 132 builds — multiple customers seeing 150+ hp at the wheel.
135 ci
Top-tier 135 builds for maximum displacement and power output.
Turbo
Turbocharged Harley-Davidson builds — tuned and proven on the dyno.
View before/after dyno sheets for every configuration on our Dyno Tuning page.
Frequently Asked Questions
Do you build Harley-Davidson big bore and stroker kits?
Yes. We build big bore kits, stroker kits, and full custom engine packages for Harley-Davidson motorcycles. We have built 117, 121 CVO, 124, 128, 131, 132, and 135 cubic inch motors. Every build includes a professional dyno tune.
Do you do head porting on Harley-Davidson motors?
Yes. Head porting is part of our engine work services and is especially effective when combined with a cam upgrade, intake, exhaust, and proper dyno tune.
Do you install cams on Harley-Davidson motorcycles?
Yes — cam installation is one of our most common services. We install Andrews, Screamin' Eagle, Wood, and other cam brands. Every cam install is followed by a professional dyno tune.
How do I get an estimate for an engine build?
Call us at 607-654-7431 to discuss your goals and we'll put together a package tailored to your bike and budget. We're in Corning, NY and serve Elmira, Horseheads, Bath, Watkins Glen, Hornell, and the entire Southern Tier.
Serving Riders Across the Southern Tier
Crystal City MotorWorx is the Southern Tier's destination for serious Harley-Davidson engine work. We serve riders from Corning, Elmira, Horseheads, Bath, Watkins Glen, Hornell, Ithaca, Binghamton, and Northern Pennsylvania. If you're searching for a qualified Harley engine builder near Elmira or Corning NY — call 607-654-7431 today.
Ready to Build?
Tell us your power goals and we'll put together the right package for your bike.