Bundle & save
Save 20% on extensions with purchase
of arm cups or wedge/cup bundles
Shop All

Shop 51 Speedshop

QUICK VIEW
Rev Aero Extensions
$229.00
QUICK VIEW
Rev Aero Light Extensions
$189.00
Sale
QUICK VIEW
Ultimate Carbon Extension
$179.00 $159.00 Save 11%
Sold Out
QUICK VIEW
Ultimate "Alloy" 120 Extensions
$79.00
Sold Out
QUICK VIEW
51 - Ski Carbon Extension
$179.00 $159.00 Save 11%
QUICK VIEW
High Sided Arm Cups
$119.00
QUICK VIEW
Arm Cups
$80.00
Sold Out
QUICK VIEW
15 Deg Arm Cup Wedge
$60.00
Sold Out
QUICK VIEW
High Sided Cup & Wedge Bundle
$160.00
Sold Out
QUICK VIEW
Mid-Height Cup & Wedge Bundle
$130.00
QUICK VIEW
76 Projects Computer Mounts
from $59.50
QUICK VIEW
High Sided Replacement Arm Pads
$45.00
View all
View all
15 products
The all new
Ultimate "Alloy" 120
Buy Now

Aero Extensions

Universal
Arm Cups
Buy Now>
QUICK VIEW
Arm Cups
$80.00
QUICK VIEW
High Sided Arm Cups
$119.00
QUICK VIEW
Standard Replacement Arm Pads
$40.00
QUICK VIEW
High Sided Replacement Arm Pads
$45.00

51 Speedshop

Whether you're a professional athlete, a weekend warrior, or just purchased your first bike...you'll experience the confidence that comes from contact points that make you feel secure and supported for all day comfort on your rides.

We are a brand that couples your feedback with the science of human performance to seamlessly connect you with your bike.