Sp Furo 13 May 2026
At 1,495g, the Furo 13 is not a featherweight climbing special (like a 1,200g boutique set), but the weight distribution is excellent. The wheels spin up quickly thanks to the low-drag hubs. On gradients of 8-12%, the wheels feel responsive but not explosive. You will notice the mass on steep pitches, but the stiffness-to-weight ratio means no energy is wasted in flex.
One of the biggest selling points of the SP Furo 13 is its wind tunnel-informed design. Unlike older V-shaped rims that catch crosswinds, the Furo 13 uses a modern U-shape. At 40mm deep, it enters a "sweet spot":
SP Cycles claims a 7.3-watt savings at 40km/h over a standard alloy wheelset, and a 12% reduction in steering torque during 15-degree yaw angles. For lighter riders (under 70kg), this stability is a game-changer on descents. sp furo 13
First and foremost, it is critical to clarify that SP Furo 13 is not merely a part number; it is a designation for a generation 13 high-performance suspension damper (shock absorber) produced by the Japanese aftermarket giant, SP Engineering (often abbreviated as SP). The term "Furo" (風呂 – Japanese for "bath" or, in tuning slang, "flow") refers to the company’s proprietary fluid dynamics system.
The "13" denotes the 13th iteration of this specific valving architecture. The SP Furo 13 was engineered to bridge the gap between aggressive street driving and light-duty track use. Unlike entry-level coilovers that prioritize ride height adjustment over damping quality, the Furo 13 focuses on predictable hysteresis and thermal stability. At 1,495g, the Furo 13 is not a
The name "Furo" derives from the Japanese word for "bath" or "hot spring" — a nod to the cleansing, smooth feel the designers wanted to inject into the ride quality. The "13" refers to the thirteenth iteration of SP’s development cycle, indicating a mature, refined product.
SP Cycles set out to solve three common problems with mid-range carbon wheels: SP Cycles claims a 7
The SP Furo 13 addresses each with a unique carbon laminate, a textured brake track (on rim models), and precision Japanese bearings.
The SP Furo 13 is not a dedicated track-only coilover (those would be the SP Furo RS line). Instead, it is the perfect "dual duty" damper. It provides 80% of the track capability with 90% of street civility.