Cube Reaction TM 29″ Hardtail MTB Frame – 2019 – 18″ (Medium). For sale is a Cube Reaction TM aluminium hardtail mountain bike frame, from the 2019 model year. The Reaction TM is Cube’s trail-focused hardtail designed for aggressive riding with modern geometry and Boost axle spacing. Frame Size: 18 (Medium). Rear Axle: Boost 12x148mm. Bottom Bracket: Press Fit. Condition: Frame is in good used condition with some light cosmetic marks from regular use (please see photos). No cracks, dents, or structural issues. All threads and fittings clean and ready to build. The Cube Reaction TM 29 Hardtail MTB Frame 2019 is a high-quality aluminium alloy frame designed for mountain bikes. This medium-sized frame is compatible with universal bike types and includes a headset and bottom bracket. With a 29-inch wheel size, this frame is ideal for riders looking to build a top-performance hardtail mountain bike. The Cube brand is known for producing durable and reliable cycling components, making this frame a solid choice for any enthusiast.