Standard gearing for 2004 to 2017 CRF250R is:
2004-2010: 13T front & 51T rear | 2011-2017: 13T front & 49T rear.
(A110/154U)
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Standard gearing for 2018 to 2021 CRF250R is:
2018: 13T front & 49T rear | 2019-2021: 13T front & 48T rear..
(A111/154U)
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Standard gearing for 2022 to 2025 CRF250R is:
2022-2023: 13T front & 50T rear.
(A11/154U)
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Regina chains are the choice of champions: with over 300 world titles to their name, Regina are the #1 choice for many race teams across the world. Regina's ZRE Z'ring chain is the latest generation characterised by the latest Z'Ring seals. Light and strong, these sealed chains are engineered to exceed the demands of the most demanding road and off-road riders. Features include gold outer plates, high carbon alloy pins, solid bushing, shot-peened plates and rollers. All ZRE chains are submitted to performance enhancing pre-stretching.
Regina ZRE Z'Ring chains off a huge improvement in wear compared to older O'Ring technology and heavy duty non O'Ring chains.
Our front sprockets are CNC machined from high tensile steel and case hardened to resist wear. Some sprockets feature lightening holes on selected models, but only when durability will not be affected.
Renthal Ultralight Chain wheels are chosen by more Factory Motocross and Supercross teams than any other brand on the market. The rear chain wheels are CNC machined to offer the greatest concentricity and optimum tooth profile for increased life and durability. Through the CNC machining process, Renthal are able to create and extremely lightweight rear chain wheel which reduces revolving unsprung weight and increases the power transfer to the rear wheel.
Please note: The images provided are an example of what you will receive. The sprockets may differ slightly (depending on what model of bike you have) and the packaging may vary. A basic set of tools will be required and you may need to shorten the chain to the appropriate size.
All orders are well packaged and dispatched using Royal Mail, or by courier. Next working day delivery service is for UK Mainland only on this item. All other UK destinations are estimated at 2 to 5 working days for delivery.
Please make sure this item is suitable for your bike before buying. If you want to ask a question about this product or one of our other items, please contact us through eBay's message service or call us for assistance.
Unfortunately we are unable to exchange or refund any parts which have been removed from the manufacturers packaging. Any returned items must be in "as new" condition so we can resell them.
Our opening times are Monday to Friday 9:30am until 5:00pm