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Fitment Note: Fits 1-3/8" to 1-1/2" tubing
Manufacturer Part Number: 4019
Material: Stainless steel
Mount Bolt Size: 5/16″
Mount Method: flat head screw and the fastener used to attach
Sold in Units: Each
Worked great holds aftermarket speedo perfect placement is up to you.
The clamp comes with a metal sleeve to use with the smaller diameter tube. Even with that, it was slightly too big, however, 2 wraps of friction tape and all was good. My downtube is flat black, the clamp covers the tape, and it works just fine. Having to use the tape is the only reason I didn't give this a 5.