The M:Part Elite Crown Race Reducer is engineered to allow the fitting of standard 1-1/8" (30mm) straight steerer tube forks into frames configured with an IS47 integrated lower headset assembly.
This precision adapter bridges the gap between oversized headset standards and standard straight steerers, providing a clean, reliable fit for custom builds and fork upgrades
Features
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Precision-engineered adapter designed to reduce an IS47 (47 mm) lower headset setup to accept a standard 1-1/8" (30 mm crown race seat) straight steerer fork
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Enables seamless compatibility for mixed-size front-end builds and fork upgrades
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Machined to exacting tolerances to maintain precise headset alignment and eliminate play
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Lightweight, durable aluminum alloy construction
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Simple drop-in installation between the 1-1/8" fork crown seat and the IS47 lower bearing
Contents
- 1 x M Part Elite Crown Race Reducer (30 mm ID / Suits IS47 Lower Cup)
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.
Weights are based off pre-production products at time of publication. Weights may vary in final production.
