Promax Impact BMX Stem - 53mm Top Load Silver CheckoutSpec= 4-Piston (74mm) - Bronze Rear lighting that flares up

Rear lighting that flares up automatically under braking

For use with 1/8" single speed BMX/Track or 8/9-Speed chains

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Battery Type Lithium Ion Connectivity ANT+ BT Wi-Fi Customizable Screen Yes GPS Yes Heart Rate Monitor Yes Primary Color White Touchscreen Yes External Sensor Compatibility Speed/Cadence/HR Wristband Translucent Whitestone/Turquoise - Silicone Watch Color Whitestone Solar Charging No

Promax Impact BMX Stem - 53mm Top Load Silver CheckoutSpec= 4-Piston (74mm) - Bronze Rear lighting that flares upThe Impact is a top load BMX stem cold forged from the highest quality 6061 T6 aluminum then CNC machined to refine the shape and further reduce weight. CNC machined 6061 T6 aluminum Stem Type Top Load Stem Angle (deg) 0 Length 53 Rise 5 Reach 53 Bar Clamp Diameter (mm) 22. 2 Color Silver Weight 278 Defined Color Silver Steerer Clamp Diameter 1 1 8" Stack Height 30. 5 Size 53Mm