CAST EFX Standard Mount Stem Giant Jan Sale The R539 is a dual

The R539 is a dual pivot caliper brake with a 47-57mm reach

strong and subtle pairing it with a Icon SS Water Bottle makes a perfect fit

Dimensions: 76 × 41 × 21 mm

go one size down

Performance skincare developed

CAST EFX Standard Mount Stem Giant Jan Sale The R539 is a dualThe EFX stem, or otherwise known as Enduro FX (enduro effects), is our top of the range race ready trail stem designed and developed on the Enduro World Cup circuit with Greg Callaghan. The EFX stem is engineered to let riders precisely record and quantify their cockpit setup, making it easy to fine tune adjustments for a consistent, confidence inspiring feel, race after race. It also improves communication between riders and mechanics when making