H&H
H&H 40/44T BCD130 Chain-Guard Chainring for Brompton Bicycle
Designed for Brompton Internal 3-Speed Hubs
A perfect companion for Brompton internal 3-speed hubs, offering a more suitable gear ratio—especially ideal for riders with moderate to weaker leg strength.
Key Features
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One-piece CNC-machined construction
Integrated machining delivers a refined finish and significantly improved overall rigidity. -
Premium material & heat treatment
Made from 7075 aerospace-grade aluminum with T6 heat treatment, ensuring excellent strength, durability, and long-term reliability.
Gear Ratio Optimization
Internal 3-speed hub ratios:
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64% / 100% / 157%
Equivalent chainring sizes:
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50T: 32T / 50T / 79T
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44T: 28T / 44T / 69T
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40T: 26T / 40T / 63T
The 44T (±3T) chainring, featuring an integrated chain guard, strikes the ideal balance between elegance and riding efficiency.
Performance Design
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Alternating narrow–wide tooth profile improves chain retention
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Reduces the risk of chain drop, especially under load
Weight
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40T: 68 g
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44T: 68 g
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44T Oval: 92.5 g