Quiver

2018 Specialized Riprock 20 vs 2016 Trek Precaliber Boy's

We can't match sizes for these two: one of them has no stack and reach for the sizes shown.

What changes on the Trek Precaliber Boy's

Frame stack
n/a
One of the bikes has no number for this
Frame reach
±0 mm
About the same reach
Wheelbase
−37 mm
Shorter: quicker to change direction
Head angle
+1.0°
Steeper: sharper steering
Chainstays
−18 mm
Shorter: livelier

The two frames

We can't draw these frames yet. The Specialized Riprock 20 numbers we have for size 9 are missing the stack. The numbers below still compare.

Geometry side by side

MeasurementSpecialized Riprock 20 9Trek Precaliber Boy's 20"Difference
Reach306mm306±0 mm
Head tube angle69°70.0°+1.0°
Seat tube angle73°not listed
Effective top tube465mm445−20 mm
Chainstay length390mm372−18 mm
Wheelbase909.5mm873−37 mm
BB drop37.5mm15−23 mm
BB height237mmnot listed
Standover528mm469−59 mm
Head tube length115mm105−10 mm
Stacknot listed429
Seat tube lengthnot listed255

Differences are the Trek Precaliber Boy's minus the Specialized Riprock 20. Full charts: 2018 Specialized Riprock 20, 2016 Trek Precaliber Boy's.

Where each sits in its class

Specialized Riprock 20Trek Precaliber Boy's

AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted

Each bike is ranked against the other kids bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.

What each ships with

The stock build of each bike's first listed trim. Parts that match are dimmed.

PartSpecialized Riprock 20Riprock 20Trek Precaliber Boy's20 6-Speed Boy's
ForkSR Suntour XCTnot listed
ShifterShimano TourneyShimano Tourney RS35
DerailleurShimano Tourney TXShimano Tourney TY300
ChainKMC Z51not listed
TireSpecialized Big RollerBontrager XR1
GripsSpecialized slip-onnot listed
SaddleSpecialized Hengenot listed
Framenot listedTrek Dialed
Cassettenot listedTrek SunRun

Know what is on every bike.

Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.

Explore the app
A Transition Relay build sheet: frame, fork, shock and drivetrainThe Relay’s ride photo galleryThe Relay’s ride spectrum and 2D frame geometryThe garage: five bikes and 99 recorded partsA Specialized Tarmac SL8 road build sheet