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MACHINE SHOP
Precision Machine Shop Services in Manchester, NH
High-Performance V-Twin Machining & Custom Manufacturing
R&R Cycles operates a fully equipped, state-of-the-art machine shop in Manchester, NH, specializing in precision machining for Harley-Davidson and American V-Twin engines. With over 30 years of experience in performance engine development, our machining services deliver the accuracy, durability, and repeatability required for high-horsepower applications.
While V-Twin performance remains our core focus, our machine shop also supports custom machining for industrial, automotive, and manufacturing clients that need specialized parts and tight-tolerance components.

Specialized V-Twin Performance Machining
We design and machine engine components in-house to ensure perfect fitment, maximum horsepower, and long-term reliability.
Our Custom Machine Services Include:
Cylinder head porting and combustion chamber shaping
Cylinder boring, honing, and decking
Flywheel and crankshaft balancing
Valve seat cutting and resurfacing
Camshaft and lifter machining
Engine case machining, thread repair, and custom modifications
CNC machining and prototype parts for Milwaukee-Eight and Twin Cam engines
Advanced Equipment.
Skilled Machinists.
Our machine shop features modern CNC mills, lathes, surfacers, flow benches, balancing equipment, and precision measuring tools. What sets us apart is the combination of advanced equipment and skilled machinists who understand both engineering and real-world performance.
Why Choose R&R Cycles for Machining Services?
Over three decades of engine machining and manufacturing experience
In-house design, prototyping, and production capabilities
Tight-tolerance machining for high-performance engines and industrial applications
Fast, reliable turnaround for dealers, builders, and manufacturers
Made in Manchester, New Hampshire — serving the USA and Canada
Custom Machining for Industrial, Automotive, and Manufacturing Clients
In addition to motorcycle performance, R&R Cycles offers precision machining services for various industries across New England and the U.S. We work directly with engineers, designers, and manufacturers to produce one-off parts or small production runs with dependable accuracy and fast turnaround times.
Industries and applications we support include:
Automotive and motorsports
Industrial equipment and manufacturing
Small engine and power equipment
Custom prototype development and short-run production
Precision CNC Machining in Manchester
Whether you’re building a high-performance V-Twin, developing a prototype, or need precision machining for industrial applications, R&R Cycles delivers the quality, accuracy, and reliability you can count on. Contact our engineering and machining experts to discuss your project and get a quote.