What flywheel weight should a spin bike have?

Heavier flywheels generally give a smoother, more momentum-driven ride, while magnetic resistance bikes can feel smooth with lighter flywheels. Consider the resistance type alongside the weight.

What is the difference between a spin bike and an exercise bike?

Spin bikes use a forward, road-style riding position with a heavy flywheel for intense workouts, whereas upright exercise bikes favour a more upright, comfort-focused posture.

Do spin bikes need a power supply?

Many use friction or magnetic resistance and need no mains power, though models with backlit consoles or connectivity may require batteries or a plug.

The 3 best spin / indoor cycling bikes🇬🇧 United Kingdom

Methodology v1.0.0 · computed 13 Jun 2026 · how we rank · AI-drafted, pending editor review

Spin and indoor cycling bikes use a weighted flywheel and a fixed riding position to mimic studio-style training at home. The best offer smooth resistance, a sturdy frame, and wide adjustment for a proper fit. Our top 3 are scored from aggregated UK reviews.

Filter

PriceUnder £450 £450–£700 Over £700

Best Overall

JTX Cyclo-6 Indoor Cycling Bike

JTX Fitness

Medium confidence · 6 sourcesNarrow win — +0.7 pts over #2

76.0

/ 100 · n=6

Sources behind this score

Do you agree with this pick?

Specs & info →Find on Amazon

Runner-up

JLL IC400 Pro Indoor Cycling Bike

JLL

Medium confidence · 6 sources

75.4

/ 100 · n=6

Sources behind this score

Do you agree with this pick?

Specs & info →Find on Amazon

JL3

Best Value

JLL IC200 Pro Indoor Cycling Bike

JLL

Medium confidence · 5 sources

74.6

/ 100 · n=5

Sources behind this score

Do you agree with this pick?

Specs & info →Find on Amazon

What to look for in spin / indoor cycling bikes

•Flywheel weight and resistance type for ride smoothness
•Adjustable saddle and handlebars for correct fit
•Maximum user weight and overall frame stability

Frequently asked questions

What flywheel weight should a spin bike have?: Heavier flywheels generally give a smoother, more momentum-driven ride, while magnetic resistance bikes can feel smooth with lighter flywheels. Consider the resistance type alongside the weight.
What is the difference between a spin bike and an exercise bike?: Spin bikes use a forward, road-style riding position with a heavy flywheel for intense workouts, whereas upright exercise bikes favour a more upright, comfort-focused posture.
Do spin bikes need a power supply?: Many use friction or magnetic resistance and need no mains power, though models with backlit consoles or connectivity may require batteries or a plug.