Zipp Service Course SL Stem (+/-17°) (Black/Gray) (70mm)
The Service Course SL stem is available in seven lengths (70mm to 130mm in 10mm increments in 17°) to meet any rider’s fitting needs. The stainless steel bolts have been replaced with titanium and use TORX® heads on all bolts for precision torque readings and ease of adjustment. Every piece in the Service Course SL line is available in the standard gloss black with white logos, as well as the "Beyond Black" black color scheme with black laser-etched black logos for a stealthy look.Torx®-Head Bolts:
Zipp chooses Torx®-head bolts for its stems and aero bars - why? It comes down to the way the tool head interacts with the bolt. Common hex tools tend to strip the bolt head if the bolt is over torqued. This is especially true with lightweight bolts. Zipp wanted to be able to use a lightweight bolt with reliable performance. Bolts on stems and aero bars are critical to safety – having a reliable bolt is crucial. Zipp chose a bolt size that was best suited for Zipp stems; T25. The standard Torx tool head for an M5 bolt is a T25. The T25 is becoming a go-to bolt in the bicycle industry. What’s more, the T25 tool is a common in bike shops or hardware stores and is readily available alone or in multi-tool sets. For your convenience, Zipp includes a T25 wrench with all stems and aero bars. The Torx® head is more robust that hex-head bolts and will not easily strip. Torx® fasteners also were designed for use with a torque wrench, which is needed to achieve the precise torque reading for proper installation. It’s simply a better bolt:
- Won’t easily strip.
- Provides more accurate torque readings.
- More durable.
Weight (100mm): 130g
Clamp Diameter: 31.8mm
Steer tube diameter: 11/8in
Stack height: 42mm
Clamp width: 40mm
Clamp torque - max: 4Nm
This product was added to our catalog on August 21, 2015.