Prevelo Bikes: Prevelo® | The Most Advanced Bikes for Kids

HEIR Crank

HEIR Crank - Main image
HEIR Crank - View 2HEIR Crank - View 3
$89.4 $149 In stock

Category: Bike Part

The HEIR Direct Mount Crank offers direct mount crank versatility and performance, in crank lengths that are optimized for young riders.

Features

  • Stiff and light cold forged design.
  • Compatible with 3-bolt direct mount chain rings.

Specifications

COMPONENT
 WEIGHT
HEIR 110mm Direct Mount Crank 454 grams
HEIR 130mm Direct Mount Crank 470 grams
HEIR 152mm Direct Mount Crank 509 grams
Chain Ring - 28t 58 grams
Chain Ring - 30t 68 grams
Bottom Bracket 138 grams
DIMENSION
 110mm
 130mm 152mm
Crank Arm Length 110mm 130mm 152mm
Q Factor
 151mm 170mm 170mm
Spindle Diameter 24mm 24mm 24mm

Determining Chain Ring Offset:

  • If your bike has 148mm rear spacing (Boost), choose 3mm chain ring offset
  • If your bike has 135mm or 142mm rear spacing, choose 6mm chain ring offset (most kids bikes fall under this category).

Assembly Instructions

Before you pay

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When it ships

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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If you need a refund

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Please contact us for the refund processing timeframe before returning an item.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Joshua P. ★★★★★

My son's bike finally has cranks that fit his short legs, and the difference on climbs is night and day. They're cold forged so they feel stiff when he stomps on the pedals, but they're light enough that he's not dragging extra weight around. Install was straightforward with the direct mount setup.

Emily ★★★★★

The cold forged crank is noticeably stiffer than the alloy ones I've used before, yet it's still light enough for my daughter to handle on climbs. The shorter length option fits her perfectly.

Emily ★★★★★

My son's bike finally has cranks that fit his short legs without feeling flexy on climbs. The cold forged arms are noticeably stiff compared to the stock ones, and the direct mount setup took me ten minutes to swap.

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