---

Evolution® Performance

GP1020

​1984-1999 Evolution® Big Twin®
1986-1990 Sportster®
1987-1990 Buell®

---

$164.95
Set of Four - U.S. Freight Included
Shipped to the U.S. and Canada Only
Email bill@gaterman.com for Canadian Orders
Sales tax charged in Wisconsin and Florida

---

---

---

---

Features and Benefits

• 3D CAD Designed and CNC Machined for Maximum Accuracy
• Chrome Alloy Steel Forged Body for High Strength
• Carburized and Hardened Alloy Steel Body
• Precision Machined and Heat Treated Internal Components
• Check-ball Metering for Precise Control and Quiet Operation
• 100% Select-fit Components for Precise Leakdown Rate
• 100% Flow Checked Pushrod Socket for Precise Oil Metering
• Hardened/Tempered Certified 52100 Steel Bearing Assembly
• Precision Staked Axle for Maximum Retention
• Precision Machined Internal Components
• Supplied Filled with Leakdown Fluid
• Inner Race Style Roller Bearing for Increased Durability
• Orbital Riveted Axle Clamps Inner Race to Roller Slot
• Quad-Loc Proprietary Retaining Ring​
• Superior Durability Compared to "Big Axle" Designs