Cosworth YBM 7.25 Clutch Standard Flywheel. This lightweight Cosworth YBM flywheel, designed, developed and manufactured in-house by Ark Racing Limited. It is made to the highest standards using high-grade steel, Nitrided heat treatment with a Shot Peened surface treatment.

Developed and manufactured to professional motorsport standards keeping strength, durability and weight (mass) in mind. This is a faithful replica of the original Cosworth Flywheel. 

Suitable for: Cosworth YBM Engine 7.25” Clutch

Specification:
Material: 817M40T (Steel)
Heat Treatment: Nitride
Surface Treatment: Shot Peened
Starter Ring: Cut into the flywheel (Not a separate Ring Gear)
Mass: 2.94 Kg (6.50 lb)

NOTE: *It is a myth that a lightweight flywheel gives you more power. It actually doesn’t!

What it does achieve is it reduces the rotating mass and inertia in your vehicle. The result is your engine isn’t using valuable horsepower spinning up a heavy flywheel, it’s going straight to your wheels onto the road which is where you need it, with the bonus of making your car lighter as well.

We manufacture a range of bespoke Starter Motors made-to-order in a variety of Voltages, Toothed Gear, Long Nose, Short Nose and D.O.R. (CW/ACW) including High-Quality Billet Flywheels for Cosworth engines. Various clutch sizes and weights (Mass) in STD, LITE and custom-specific developed.

DFV 7.25 STD | DFV 7.25 LW | DFV 5.5 Deep Dish Stepped | DFV 5.5 Stepped Ultra Thin | DFV Carbon Clutch 8 Bolt | DFV Stepped Carbon Clutch 8 Bolt | Cosworth YB Type 7 1.4kW Starter Motor | Clutch Studs | Cosworth SCA 90T Lip Seal Flywheel | Cosworth SCA 90T Rope Seal Flywheel | Cosworth DFY F3000 Flywheel | Cosworth DFR 7.25” 8-Bolt Flywheel | Cosworth FVA Flywheel | Cosworth MAE Lip Seal 90T 5.5” Clutch Flywheel | Cosworth MAE Lip Seal 90T LW Flywheel | Cosworth MAE Lip Seal 90T Flywheel | Cosworth XB SN 37BRG1MAPEEX 2.0kW Starter Motor | Cosworth XB LN Type-7 37BRG 1.4kW Starter Motor | Cosworth XB LN Type-8 2.0kW Starter Motor with Steady Bracket | Cosworth XB SN Type-8 2.0kW (9T) | Cosworth XB SN Type-8 2.0kW (13T) | Cosworth XB SN Type-8 2.0kW (20T) | Cosworth XB Type-8 1.4kW (13T) Starter Motor | Cosworth XB Long Nose Starter | Ford Sierra 2WD Cosworth 1.6kW Starter Motor | Ford Sierra Cosworth 4WD 1.6kW Starter Motor | Ford Escort Cosworth 4WD 1.6kW Starter Motor | Cosworth DFV Carbon Clutch 10 Bolt | Cosworth YBM 7.25 Clutch Standard Flywheel | Cosworth YBM Lightweight 5.5” Clutch Flywheel and more

Whatever your requirements are, whether high-output, high-torque, weight-reduction or something more specific,
Ark Racing Limited can provide a solution.

We recommend using our Clutch Bolts which come with
K-Nuts at a competitive price, in some instances, SAVING 25% over our competitors.

Concentric Sizes
38.5 | 40mm | 43mm | 48mm | 52mm | 55mm | 60mm | 64 mm | 68mm | Cosworth DFV |

Eccentric Sizes
BMW M12 44 Eccentric Clutch Stud
BMW M12 54mm Eccentric Clutch Stud
BMW M12 56mm Eccentric Clutch Stud

More sizes are available or can be produced in Concentric & Eccentric variants, please enquire.

If you can’t find what you’re looking for, contact us.

Ark Racing can create a solution to meet your requirements.

Call us on +44 (0)345 557 7408 or complete our online contact form.