Business Details
23 Years
experience
Classic Motorcycle Restoration & Engine Rebuilds
Established in 2003, D & M Engineering has become a trusted specialist in classic racing motorcycle restoration, engine rebuilds, and performance tuning. With over 30 years of combined experience in motorsport, including participation in prestigious events like the Isle of Man TT and Grand Prix racing, our team brings unparalleled expertise to every project. We focus on Honda four-cylinder machines such as the CB350K4, CB500/4, and RC series, offering services ranging from full engine overhauls to bespoke cafe racer builds. Our partnerships with specialists like TorqueTune Dyno Centre and NRP Exhausts enable comprehensive development and exhaust solutions.Catering to vintage, classic, and modern machines, we provide machining, welding, and fabrication services while supplying both new and used spares. Our commitment to quality is reflected in our meticulous attention to cylinder head work, crankshaft rebuilding, and chassis modifications. As lifelong motorcycle enthusiasts, we understand the unique needs of riders and collectors, ensuring every restoration or modification aligns with the highest standards of reliability and performance. Our workshop in Bilsthorpe serves clients across the UK, combining technical excellence with a passion for preserving motorcycle heritage.
Services
Engine Rebuilds
Performance Tuning
Cafe Racer Builds
Cylinder Head Work
Classic Honda Parts
Details
- Year established: 2003
Highlights and features
- 30+ years of motorsport experience including Isle of Man TT and Grand Prix racing
- Specialists in Honda four-cylinder classic racing machines
- Full engine rebuilds and race-spec tuning capabilities
- Partnership with TorqueTune Dyno Centre for performance optimisation
- Bespoke fabrication and chassis modification expertise
Services
Engine Rebuilds
We specialise in complete engine rebuilds for vintage, classic, and modern motorcycles. Our expertise covers Honda four-cylinder machines like the CB350K4 and CB500/4, with capabilities in cylinder boring, crankshaft rebuilding, and valve work. Using precision machining and OEM-quality parts, we restore engines to original specifications or enhance them for racing performance. Our team's decades of motorsport experience ensures reliability and power output tailored to your riding needs.
Performance Tuning
Our performance tuning service optimises motorcycle engines for racing or enhanced road performance. We utilise Dyno testing facilities and bespoke exhaust systems to maximise horsepower and efficiency. Specialising in classic Honda four-strokes, we offer cylinder head gas flow analysis, camshaft upgrades, and fuel system modifications. With experience from Grand Prix racing to classic road machines, we deliver measurable improvements in power delivery and reliability for discerning riders.
Cafe Racer Builds
We create bespoke cafe racer motorcycles tailored to individual specifications. Our builds combine period-correct aesthetics with modern performance enhancements, including frame modifications and engine swaps. Using both traditional fabrication techniques and contemporary components, we transform classic machines like the CB350K4 into high-performance street racers. Each project receives meticulous attention to detail, ensuring authenticity while meeting modern safety standards.
Cylinder Head Work
Our specialist cylinder head services include skimming, valve guide replacement, and seat cutting for four-stroke engines. We handle both standard restoration work and performance modifications, with expertise in gas flow tuning for racing applications. Using precision equipment, we repair alloy and cast iron heads, addressing issues from minor wear to major damage. Our technicians' experience with competition engines ensures optimal combustion efficiency and durability.
Classic Honda Parts
We supply both new and used spares for classic Honda racing motorcycles, including CB250/350K, CB400/4, and CB500/4 models. Our inventory covers essential components for restoration projects and maintenance. For hard-to-find items, we offer machining services to recreate original specifications. As specialists in Honda four-cylinder machines, we ensure parts compatibility and quality, supporting enthusiasts in preserving these iconic motorcycles.
People
Dave
Owner & Lead Engineer
With 30+ years in motorcycle racing and engineering, Dave has competed in Isle of Man TT events and worked as a mechanic for Grand Prix teams. He established D & M Engineering in 2003 after a successful racing career spanning Aermacchi, Ducati, and Yamaha machines. His expertise covers engine development, chassis modifications, and classic restoration projects.
Questions
What types of motorcycles do you specialise in?
We specialise in classic Honda four-cylinder machines like the CB350K4, CB500/4, and RC series, but work on all eras from vintage to modern sports bikes.
Do you offer engine tuning services?
Yes, we provide performance tuning including Dyno testing, cylinder head work, and exhaust system optimisation for improved power output.
Can you help with cafe racer modifications?
We offer complete cafe racer builds and modifications, including frame adjustments, engine swaps, and period-correct styling enhancements.
Do you supply spare parts for classic motorcycles?
We stock new and used spares for classic Honda racing bikes and can source or fabricate hard-to-find components.
What areas do you serve?
Based in Bilsthorpe, we serve clients nationwide across the UK for motorcycle restoration and engineering services.
What experience do you have with racing motorcycles?
Our team has worked in Grand Prix racing, British Superbike teams, and Isle of Man TT events, with decades of hands-on engineering experience.
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