Because the original box of LTWOO GRT12-Disc is too big and heavy, it will increase the shipping fee by about 40-50 dollars, so we provide the option without box, the money saved is the shipping fee, both options enjoy the same warranty service, please rest assured Buy Technical Features: LTWOO Newest GRT12-Disc The grip is ergonomically designed, and the rubber sleeve is made of special silicone material, which is more comfortable to the touch (use mineral oil) The overall modular design is adopted, and any damaged parts can be replaced at low cost Egg Roll brake pads, based on the Venturi effect, the air vortex can quickly remove heat, the heat dissipation area is 300% higher than competing products, ultra-high heat dissipation efficiency, effective resistance to heat attenuation, and the weight is only 13g Ceramic pistons are used to keep high temperatures out of the calipers. Groupsets include: GRT12-Disc Shifter R x 1 / L x 1 GRT12 Calipers x2 Brake Hose 700mm x 1 1700mm x 1 Clamp adapter Front 140/160 x1 Front 160/180 x1 with screw, Rear 140/160 x1 Rear 160/180 x1 with screw GRT12 Rear Derailleur x1 luminum Shifter (Carbon) Type: Mechanical Shifting & Hydraulic Disc Brake Material: Carbon Fiber Brake Lever. Operation: Dual shift levers. Cables: Shift cables included. Weight: Remaining: ~215 g Straight: ~290 g Rear derailleur (carbon) Speed: 12-speed Compatible sprocket: Minimum 11T / Maximum 52T Weight: ~283g Color: Blue-Grey Integrated rear derailleur clutch damper that dampens chain vibration for quiet rides and anti-sagging chain performance. Pulley Wheels: Both pulleys feature positive and negative teeth to ensure smooth shifting and prevent chain dropping. Cage Material: Carbon fiber inner and outer cage for optimized weight saving.

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