Industry Nine Hydra 2 Axle

$38.50

In Stock

OEM rear axle + washer kit for Industry Nine Hydra 2 hubs — precision-machined, secure clamping, available in 148mm and 157mm lengths. Includes washers for a direct fit.

Add to Cart

🚚 Fast Shipping 🔒 Secure Checkout ↩ Easy Returns

Available Options

Option	Price	Availability
Industry Nine, Hydra 2 Axle, 148mm, Kit	$38.50	In Stock
Industry Nine, Hydra 2 Axle, 157mm, Kit	$38.50	In Stock

Product Details

Overview & Technology

Industry Nine Hydra 2 Axle is a factory replacement axle and washer kit engineered to restore the original fit, function and reliability of your Hydra 2 rear hub. Offered in the common rear spacing lengths (148mm and 157mm), this kit is sold under Manufacturer Part # MKMX01 and listed as Product Number 091238 for the 148mm variant. The axle is precision-machined and finished to the tolerances expected from Industry Nine hubs. The kit includes a hardened axle shaft plus an assortment of precision washers to ensure correct preload, secure axle clamping and consistent bearing alignment — all essential for retaining the Hydra 2’s crisp engagement and long-term durability.

Key Features

Direct OEM replacement: Designed specifically for Industry Nine Hydra 2 rear hubs to match factory dimensions and tolerances. Perfect for service, upgrades, or replacing a damaged axle. • Available lengths: 148mm and 157mm kits to suit Boost and Boost+ spacing. • Complete kit: Axle shaft plus washers included for accurate spacing and axle clamp security. • Precision finish: CNC-machined surfaces and a hardened finish for wear resistance and smooth operation.

Fit, Compatibility & Installation

This kit is intended for the Industry Nine Hydra 2 rear hub family. The 148mm kit (Product #091238 / MPN MKMX01) fits 148mm rear spacing; a 157mm variant is available for frames requiring 157mm axle length. Always confirm your bike’s rear spacing before ordering. Installation is straightforward for anyone comfortable servicing hubs: remove the end caps, replace the axle and washers in the correct order, and torque hardware to Industry Nine’s recommended specs. If you’re unsure about torque or bearing preload, have a qualified mechanic install the kit to preserve hub bearings and engagement components.

Who This Is For

Mountain bikers who own bikes equipped with Industry Nine Hydra 2 rear hubs — whether upgrading from a damaged axle, maintaining service intervals, or swapping between wheel standards — will find this kit essential. It’s also useful for mechanics stocking OEM replacement parts for fast turnaround on customer repairs. Riders who value precise hub performance and want an OEM-fit replacement to keep engagement, bearing alignment, and axle clamping consistent should choose this kit over generic axles or one-off solutions.

Key Features

✓ OEM replacement axle + washer kit for Industry Nine Hydra 2 rear hubs
✓ Available in 148mm and 157mm rear axle lengths for Boost/Boost+ frames
✓ Precision-machined axle with hardened finish for long-lasting service
✓ Includes washers to maintain correct preload and bearing alignment
✓ Direct-fit part number MKMX01 (Product #091238 for 148mm)
✓ Straightforward swap — ideal for home mechanics and pro shops
✓ Lightweight, compact shipping: 4.6" x 0.6" x 0.6", 0.1 lb

Specifications

Hub Axle Length	148mm
Position	Rear

Product Identifiers

Vendor Item #	MKMX01
UPC	197769693199
EAN	0197769693199

Frequently Asked Questions

Which hub models is this axle compatible with?

The Hydra 2 Axle kit is made for Industry Nine Hydra 2 rear hubs. Choose the correct axle length (148mm or 157mm) to match your frame spacing. If in doubt, verify your hub model and rear spacing before purchasing.

What’s included in the kit?

Each kit includes the rear axle shaft and the matching set of washers required to replicate the factory spacing and clamp preload. Small fasteners or end caps are typically reused from your hub unless replacing damaged parts.

Can I install this at home?

Yes — if you have basic hub service skills and proper tools. Remove end caps, transfer bearings if needed, fit axle and washers in the correct order, and torque to Industry Nine’s specifications. If you’re unfamiliar with bearing preload or torque values, have a bike shop install it.

Do I need to grease the axle?

Light application of grease on contact surfaces and threads helps prevent corrosion and eases future removal. Avoid over-greasing bearings — follow your hub service guide for proper bearing lubrication.

Is this an OEM part?

Yes — this is an Industry Nine-specified axle and washer kit (MPN MKMX01). It’s intended as a direct replacement to maintain factory fitment and hub performance.

How do I choose between 148mm and 157mm?

Measure the hub/ frame rear axle-to-axle spacing or consult your wheel/hub specifications. 148mm is the common Boost spacing; 157mm is used by some fat or boost-plus setups. Select the variant that matches your rear dropout spacing.

Buying Guide

When buying a replacement rear axle kit for a high-performance hub like the Industry Nine Hydra 2, accuracy matters. Match the axle length to your wheel/frame spacing (148mm or 157mm), verify the hub family, and prefer OEM kits to retain original tolerances and performance. OEM washers and axle geometry maintain correct bearing alignment and clamping, which preserves hub engagement and longevity. Also consider whether other hub parts need service or replacement at the same time — damaged end caps, worn bearings or loose engagement components are often discovered during axle swaps. If you’re unsure about installation or torque specs, have a qualified mechanic complete the job to avoid costly damage.

Ready to order?

Shop with confidence at Scenders — premium cycling parts, fast shipping.

View Full Product