The Calculated R Series Stem 1" MK1 is another trick looking BMX stem from the guys at Calculated Racing and of course it’s super lightweight. CNC’d from 7075-T6 Alloy and featuring stainless steel Torx bolts.

It adopts the same clamping method as its bigger brother the VSR Fat Mouth to maximise clamping surface for greater clamping power. As a side note it’s said to be carbon fiber steerer tube and handlebar compatible.

It’s among the lightest in its class and length, weighing in at a scant 135 grams.

35, 40 & 45mm reach stem
CNC’d 7075-T6 aluminum body and cap
Stainless Steel hardware
135 grams total weight
For 1” fork steer tube
Suits 22mm (7/8”) handlebars
Carbon Fiber Steerer Tube and Handlebar Compatible
Machined In Santa Cruz California
Lifetime Replacement Guarantee
Check out the embedded video to see BMX Ultra chatting with Casey Robinson from Calculated Racing.
SKU 81STEMMK101
Brand Calculated Racing