Renthal – Renthal Rear Sprockets - Twinring - Honda, including 96-18 CR250R Twinrings, CRF150R, CRF250R and CRF450R/X fitments, 96-17 CRF 230F options and XR 250R and XR 650R coverage in red, silver and black. Twinring is Renthal's two-piece answer to the trade-off every racer knows: aluminium is light but wears, steel lasts but is heavy. Here a hardened steel outer ring carries the teeth and the chain load while a machined aluminium inner carrier bolts to the hub, so a Honda keeps close to alloy weight with wear life measured in seasons rather than weekends. Tooth counts around 47P, 48P and 50P suit everything from a CRF450R on a hardpack national track to a CRF230F set up for trails. Riders who log big hours, ride sandy or muddy ground, or hate re-shimming a stretched chain get the most from it. Because the outer ring resists hooking, chain tension stays consistent, power transfer feels direct, and rear wheel tracking stays predictable under acceleration. Anodized red and silver carriers also finish a Honda build cleanly next to red plastics. Fitting a matched chain with the new Twinring keeps engagement accurate from the first ride out.