40T 一體式護盤齒片 40T Chain-Guard Chainring

40T 一體式護盤齒片 | 40T Chain-Guard Chainring
小布內三花鼓的最佳搭檔，提供更合宜的齒比，特別適合 中弱腿力騎士。採用 一體式 CNC 加工 製造，搭配 7075 航空鋁合金 T6 熱處理，確保剛性與耐用度並具高質感。齒比對應內三花鼓 (64%、100%、157%)：

50T : 32T – 50T – 79T
44T : 28T – 44T – 69T
40T : 26T – 40T – 63T

規格：BCD 130mm，重量僅 68g。

40T Chain-Guard Chainring
The perfect companion for Brompton’s 3-speed hub, offering optimized gearing, especially suitable for riders with moderate to lower leg strength. Made with one-piece CNC machining and 7075 aerospace aluminum with T6 heat treatment, ensuring both stiffness and durability with a premium finish. Gear ratio reference for 3-speed hub (64%, 100%, 157%):

50T: 32T – 50T – 79T
44T: 28T – 44T – 69T
40T: 26T – 40T – 63T

Specs: BCD 130mm, weight only 68g.

材質：7075鋁合金
BCD：130mm
重量：68g

Material: 7075 aluminum alloy
BCD：130mm
Weight: 68 g

台灣地區買2,000元免運、海外地區滿10,000元免運
Free shipping for orders over NT$2,000 in Taiwan; free shipping for international orders over NT$10,000.