GOLDIX | GOLDIX M240 28H Boost MTB Hub 36T Ratchet Straight Pull Center Lock HG XD MS 110x15 148x12 10-12 Speed Bicycle Wheel Hub

GOLDIX originates from one of China’s largest bicycle hub manufacturers. We offer a full range of models and specifications, backed by strong technical expertise.You are welcome to purchase our products. We also provide custom services for non-standard designs.Please feel free to contact us if you have any questions.Brand: GOLDIXModel: MTB 240 SeriesFreehub Body Type: HG / XD / MSFront Hub Spacing: 110 × 15 mmRear Hub Spacing: 148 × 12 mmBrake Type: Centerlock Disc BrakeSpokes: Steel Spokes, 28HBearing Brand: SSFront Hub Bearings:Hub Shell 110 × 15: 17287 × 2Rear Hub Bearings:Hub Shell: 6902 × 2Freehub Body: 6802 × 2Maximum Spoke Tension: 2500 N per spokeWaterproof & Dustproof Rating: IP42–IP53Ratchet System: New Helical Engagement 36T Ratchet SystemWeight: Please refer to the product images. Weight may vary by ±10 g between different production batches. Placing an order means you accept this condition.Freehub Body Compatibility Notice:Please make sure to confirm your drivetrain system and required freehub body type before purchasing. Otherwise, the product may not be compatible with your bike.HG: Compatible with Shimano 10–12 speedXD: Compatible with SRAM 11–12 speedMS: Compatible with Shimano 12 speedProduct Features:The new GOLDIX 240 Series has been fully upgraded in its ratchet engagement structure. Under the same weight and tooth-count conditions, the new ratchet increases the engagement area by 38%, significantly improving load capacity and making power transmission more stable.A conventional flat ratchet uses an evenly distributed concentric block-style tooth surface. The overall force path is flat and ring-shaped, with a stress level of approximately 630 MPa.The GOLDIX new ratchet adopts a helical tooth profile guided by an oblique cut toward the base circle. The overall force path follows a conical inward direction. This guided design allows the pawls to engage the tooth slots more smoothly and precisely, resulting in faster engagement, significantly reduced free play, and more direct power response.It also features an automatic concentric return function. During riding, the ratchet can remain stable on the same axis, effectively reducing ratchet offset and improving engagement stability.The stress level is approximately 480 MPa. Under a simulated torque load of 230 N·m applied to the tooth surface, peak stress is reduced by about 32%.Under equivalent conditions, the GOLDIX new ratchet offers a significantly longer service life than a conventional 36T flat ratchet.