R9 2x11 Speed Road Bike Groupset Hydraulic Disc Brake Packing List LTWOO R9 Left Shifter ×1 (Shifting cable included) LTWOO R9 Right Shifter ×1 (Shifting cable included) LTWOO R9 Front Derailleur ×1 LTWOO R9 Rear Derailleur ×1 LTWOO Hydraulic Brake Calipers ×2 ZRACE RX Road Crankset ×1 ZRACE 11-Speed Cassette ×1 (HG Freehub compatible) ZRACE 11-Speed Chain ×1 (120L, manufactured by SUMC & DYC) ZRACE 160mm Brake Rotors ×2 (Centerlock by default) Included & options Hydraulic brake hoses Front: 700mm / Rear: 1700mm Flat Mount caliper adapters (Front 140/160mm & 160/180mm, Rear 140/160mm & 160/180mm; all screws included) Olive and connect insert (needle) kit Crank Length Options: 165mm / 170mm / 172.5mm / 175mm Chainring Options: 53-39T / 52-36T / 50-34T Cassette Options (11-Speed): 11-28T / 11-30T / 11-32T / 11-34T Brake Rotor Mounting Note: Centerlock rotors are shipped by default. If you require 6-Bolt rotors, please be sure to leave a message in your order notes. Freehub Compatibility Note: The cassette is natively compatible with standard HG freehubs. If you require XDR or Micro Spline (MS) freehub specifications, please contact our customer service team in advance. Shifter Type：Mechanical Shifting & Hydraulic Disc Brake Material: Aluminum alloy brake lever. Operation: Dual Shifting levers. Cables: Shifting cables included. Weight: 300g / piece. Rear Derailleur Max Sprocket: Max compatible with 34T cassette. Total Capacity: ≤ 37T gear capacity. Weight: ≈250g Front Derailleur Type: Direct Mount（≈106g) Max Tooth: 56T. Total Capacity: 16T. Chainstay Angle: 61-66°. Chain Line: 43.5-44.5mm. Clamp Size: 31.8mm / 34.9mm. Hydraulic Brake Calipers Manufactured from a single CNC-machined body, the caliper offers increased stiffness and more even force distribution.（Includes hydraulic hose and brake adapter） Reduced caliper flex under braking More direct braking force transfer Consistent and linear braking feel Improved braking stability and control Rotors Material: 7075 Aluminum alloy. Design: CNC hollowed out for fast heat dissipation. Size: 160mm diameter, 1.8mm thickness. Mounting Type: Center Lock (6-Bolt optional) Weight：154g Crankset Model: ZRACE RX Road Chainset. Material: Forged 6061 aluminum alloy, full CNC machined. Spindle: DUB 29mm steel spindle. Crank Arm Design: RX hollow aluminum, 3-bolt interface system. Length Options: 165mm / 170mm / 172.5mm / 175mm Q-Factor: 148mm. Chainring Specification: CNC machined aluminum, BCD 110mm Chainring Options: 53-39T / 52-36T / 50-34T. Compatibility: Works with all 10, 11, and 12-speed chains. Weight: Crank arms approx 525g. Cassette Speed: 11 Speed. Material: High-strength steel. Compatibility: Fits HG freehub standard. Options & Weight: 11-28T (approx 302g) 11-30T (approx 315g) 11-32T (approx 363g) 11-34T (approx 372g) Chain Speed: 11 Speed (compatible with SHIMANO, SRAM, LTWOO). Links: 120L. Material: High-strength alloy steel (Nickel-plated anti-rust). Connector: Includes reusable Quick-Link / Master-Link. DUB 29mm Bottom Bracket Compatibility: Fits DUB 29mm spindle cranksets (ZRACE RX). Bearings: Sealed steel bearings (smooth, waterproof, dust-proof). BSA: Threaded | Width: 68-73mm | Inner Dia: 34.8mm PF30: Press-Fit | Width: 68-73mm | Inner Dia: 46mm BB30: Press-Fit | Width: 68-73mm | Inner Dia: 42mm BB86 92: Press-Fit | Width: 86.5-92mm | Inner Dia: 41mm

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