Calfee Design has delivered you the most advantageous off-road tandemS on the market.

The ideal off-road frame is light, laterally stiff and delivers applied pedal power to the drive train. We feel we nailed it!

TETRA 27.5″ HARDTAIL TANDEM

 

Tetra Tandem Off-Road Hardtail Frame Geometry

Captain Stoker
Sizes Size Top Tube Seat Angle Stand- over Ht. Front Center Head Tube Length Size Stand- over Ht. Seat Angle Boom Tube
Small/Small 45 58.4 73.5 78.1 66.8 12 40 69.7 73.5 72.3
Medium/Small 48 60.5 73.5 80.5 68.5 12 40 71.2 73.5 72.3
Large/Small 51 63.5 73 84.2 70.6 15 40 72.7 73.5 72.3
Large/Medium 51 63.5 73 84.2 70.6 15 43 74.2 73.5 72.3
XLarge/Medium 54 66 73 87.5 72.6 18 43 75.7 73.5 72.3

All frames have 33cm (13″) bottom bracket ht, 43cm (17″ chainstays)
Wheel/tire size of this chart: 27.5(650B) wheel size with 2.25″ (57mm) tire.

Features

    • Compatible with cable or electronic drivetrains
    • Custom geometry available
    • Able to offer internally routed disc brake line
    • 27.5″ wheel size with 2.25″ (57mm) tire.

TETRA 27.5/29″ PLUS TANDEM

Tetra Tandem Off-Road Plus Frame Geometry

Captain Stoker
Sizes Size Top Tube Seat Angle Stand- over Ht. Front Center Head Tube Length Size Stand- over Ht. Seat Angle Boom Tube
Small/Small 45 58.4 73.5 79.5 66.8 10 40 69.0 73.5 72.3
Medium/Small 48 60.5 73.5 81.5 68.5 10 40 70.5 73.5 72.3
Large/Small 51 63.5 73 83.5 70.6 12 40 71.8 73.5 72.3
Large/Medium 51 63.5 73 83.5 70.6 12 43 73.3 73.5 72.3
XLarge/Medium 54 66 73 86.3 70.6 15 43 74.5 73.5 72.3

All frames have 33cm (13″) bottom bracket ht, 44cm chainstays
Wheel/tire size of this chart: 27.5+/29″ wheel size with 3″ tire.

TETRA FULL-SUSPENSION TANDEM

NEW 2021 RELEASE DATE – CHECK WITH OUR SALES STAFF AT SALES@CALFEEDESIGN.COM FOR MORE INFORMATION.

 

TETRA FAT TIRE TANDEM

Ready to roll any terrain; sand, dirt, snow, including tens of thousands of miles of shoreline!

 

Frame Pricing – Frame Geometry

Calfee Design 1-800-965-2171