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Contour - 3/8"-16 Adapter
Engraving
Adapter
Enhanced grip and 500 grams of mass define the Contour's smooth and precise shifting experience. The grip ring is an intentional ergonomic undercut below the sphere that provides an ideal location for your fingers to sit, grip and shift.
WEIGHT - 1.1lbs
HEIGHT - 2.3 in
DIAMETER - 2 in
Frequently bought Together
![](http://raceseng.com/cdn/shop/files/Mass_Series_Thumbnail_cd545deb-7959-4cc2-bb18-8feca3c4c2c4_1920x.jpg?v=1659634546)
WEIGHTED FOR PERFORMANCE SHIFTING
The utilization of stainless steel creates a shift knob with mass to smooth out notchy shifting.
![](http://raceseng.com/cdn/shop/files/Boot_Collar_Block_-_Contour_1400x.jpg?v=1659634689)
THE FINAL PIECE
Our shift boot collars were intentionally made to remove boot crack or saggy shift boots.