ROTOR Round Chainrings (No Q-Ring) DM 2x 直裝式雙片正圓齒片

描述

產品概述

ROTOR DM 2x 直裝式雙片正圓齒片採用一體式 Direct Mount 設計，直接鎖附於曲柄軸心，無需盤爪與螺絲。以整塊 7075 航太級鋁合金 CNC 精密加工而成，相較於傳統 BCD110×4 齒盤組合可節省超過 30 克重量，搭配 ALDHU 曲柄臂即成為 ROTOR 史上最輕的曲柄組 。正圓設計帶來一致、可預期的踩踏節奏，適合公路、鐵人三項、越野公路與礫石騎乘 。

主要特點

一體式直裝設計
無需盤爪、螺絲或額外固定件，齒盤直接安裝於曲柄軸心。一體式結構帶來極高的剛性與直接的動力傳輸，同時簡化安裝步驟 。

7075 航太級鋁合金
採用航太級 7075 鋁合金，100% CNC 精密加工，輕量、高強度、耐磨損 。

正圓設計
傳統圓形齒盤，踩踏節奏一致，動力輸出可預期，適合偏好圓盤手感的騎士 。

Universal Tooth® 技術（部分版本）
部分新型號採用專利 Universal Tooth® 齒型設計，相容 Shimano 與 SRAM 的 11 速及 12 速鏈條 。

技術規格

相容性

曲柄：

• ROTOR 2INpower DM Road / 2INpower

• ROTOR INpower DM / INpower

• ROTOR ALDHU / ALDHU Carbon / ALDHU24

• ROTOR VEGAST / VEGAST24 

變速系統：

• ROTOR UNO 2x11s

• Shimano 2x11s / 2x12s

• SRAM 2x11s 

注意： 不相容 SRAM AXS 12 速系統 。

備註

• 此為 2x 雙盤系統齒盤組，盤爪、螺絲與曲柄需另行購買。

• Direct Mount 設計需搭配對應的 ROTOR DM 曲柄，購買前請確認曲柄型號。

• 另有橢圓版本（Q-Ring）可供選擇。

Product Overview

The ROTOR DM 2x Direct Mount Round Chainrings feature a one-piece Direct Mount design that attaches directly to the crank axle, eliminating the need for a spider and bolts. CNC-machined from a single block of 7075 aerospace-grade aluminium, they save over 30 grams compared to a standard BCD110×4 chainring combo, making them ROTOR’s lightest crankset ever when paired with ALDHU crank arms . The round profile delivers a consistent, predictable pedal stroke, ideal for road, triathlon, cyclocross, and gravel riding .

Key Features

One-Piece Direct Mount Design
No spider, bolts, or extra hardware required — the chainring mounts directly to the crank axle. The one-piece construction delivers exceptional stiffness and direct power transfer while simplifying installation .

7075 Aerospace-Grade Aluminium
Aerospace-grade 7075 aluminium, 100% CNC-machined for lightweight, high-strength, and wear-resistant performance .

Round Design
Traditional round chainring for consistent pedal rhythm and predictable power delivery — ideal for riders who prefer round-ring feel .

Universal Tooth® Technology (Select Versions)
Some newer models feature the patented Universal Tooth® profile, compatible with Shimano and SRAM 11-speed and 12-speed chains .

Technical Specifications

Compatibility

Cranks:

• ROTOR 2INpower DM Road / 2INpower

• ROTOR INpower DM / INpower

• ROTOR ALDHU / ALDHU Carbon / ALDHU24

• ROTOR VEGAST / VEGAST24 

Groupsets:

• ROTOR UNO 2x11s

• Shimano 2x11s / 2x12s

• SRAM 2x11s 

Note: Not compatible with SRAM AXS 12-speed .

Notes

• This is a 2x double chainring set — spider, bolts, and cranks are NOT included.

• Direct Mount design requires a compatible ROTOR DM crank — please confirm your crank model before purchase.

• An oval version (Q-Ring) is also available.