Insight STI-8

The Insight STI-8 brings the smooth simplicity of an internally-geared hub to our popular performance hybrid bike platform. The hydroformed aluminum frame has a tall headtube and relaxed geometry, setting you up for a more upright ride than a full-on road bike. This translates to less fatigue on your arms, neck, and back. Puncture-resistant tires and hydraulic disc brakes are well-suited for urban commuting, as is the slick internal 8-speed hub: it’s sealed and virtually maintenance free. Whether set up as a commuter, bike path cruiser, or neighborhood utility bike, the Insight 3 is a winner.

Upgrades over Insight 1

  • Shimano 8-speed twist shifter and internally geared hub
  • Shimano hydraulic disc brakes
  • Kenda Kwik Trax puncture resistant tires, 700x32c


  • Hand built 6061-T6 aluminum alloy frame is durable and comfortably compliant
  • Integrated Aero Alloy straight blade fork delivers quick, confident handling
  • Shimano hydraulic disc brakes
  • 8-speed drivetrain is simple and reliable
  • Frame and fork eyelets let you mount rack and fenders

Bike Specs

Sizes S/16"  M/18"  L/20"  XL/22" 
Frame Insight 6061-T6 Butted Aluminum Performance Hybrid w/ Formed / Hooded Top Tube, Integrated Headtube, Vertical Compliance Stays, (VCS) w/ Disc Tabs
Fork Insight Integrated Aero Alloy Straight Blade w/ Disc Tabs
Rear Shock
Cranks Alloy single chainring w/ alloy chainguard 38t
Bottom Bracket Sealed Cartridge
F. Derailleur N/A
R. Derailleur N/A
Shifter Shimano SL8S-20 light action, 8 spd, Twist Shift
Brake Levers Shimano 355 Hydraulic Disc Brake Levers
Brakes Shimano 355 Hydraulic Disc Brakes, w/ 160mm Rotors
Cassette Shimano 18t Sprocket for Internal Gear Hub
Rims 32h Equation R23 Doublewall
Tires Kenda Kwick Trax w/ puncture resistant K-shield 700x32c
Pedals Wellgo Alloy body / cage, toe clip compatible
Handlebar DB 31.8mm low rise Alloy
Stem DB 3D Forged 7° 31.8mm
Seatpost Alloy Micro Adjust 27.2mm
Seat DB Performance Hybrid w/ Gel
Headset Integrated "Cane Creek" Size Drop-in ACB 1 1/8"
Colors Dark Blue
Chain KMC-Z51
Hubset (F) 32h Alloy QR (R) 32h Shimano Nexus Internal 8-spd with Center Lock Disc
Spokes Black 14g Stainless Steel
Grips Diamondback Dual Density Comfort Grip
Extras Owner's Manual
Note Specifications Subject to Change


Size S/16" M/18" L/20" XL/22"
Seat Tube Length ** 400.0mm 450.0mm 500.0mm 550.0mm
Standover Height 710.0mm 752.0mm 792.0mm 833.0mm
Top Tube Length * 555.0mm 580.0mm 600.0mm 620.0mm
Stack 577.0mm 596.0mm 615.0mm 638.0mm
Reach 379.0mm 398.0mm 412.0mm 425.0mm
Head Tube Length 150.0mm 1710.0mm 190.0mm 215.0mm
Head Angle 71.0° 71.0° 71.0° 71.0°
Seat Angle 73.0° 73.0° 73.0° 73.0°
Wheel Base 1049.0mm 1073.0mm 1094.0mm 1115.0mm
Chain Stay Length 450.0mm 450.0mm 450.0mm 450.0mm
Fork Offset 48.0mm 48.0mm 48.0mm 48.0mm
BB Height 0.0mm 0.0mm 0.0mm 0.0mm
BB Drop 70.0mm 70.0mm 70.0mm 70.0mm
Stem Length 0.0mm 0.0mm 0.0mm 0.0mm
Handlebar Width 0.0mm 0.0mm 0.0mm 0.0mm
Crank Length 0.0mm 0.0mm 0.0mm 0.0mm
Seat Post Length 0.0mm 0.0mm 0.0mm 0.0mm
* Measured Horizontally ** Measured from Center

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