The Ohlins YA2190 STX 46 MX is a rear mono shock developed for motocross use on the Yamaha YZ 85. It is built around a pressurised damping design intended to keep damping response consistent under repeated hard hits. This unit is supplied without a spring, allowing spring rate selection to suit rider weight and track conditions.

Ohlins | Made to race, perfected to ride

STX motocross shocks are engineered to provide controlled damping behaviour and clear feedback at the limit. The YA2190 follows that approach with a focus on stability, traction and predictable response through changing track conditions.

Who this shock is for

  • YZ 85 riders wanting a purpose-built rear shock for motocross use
  • Riders chasing improved rear-wheel connection on acceleration and through rough sections
  • Owners who want adjustability to suit different tracks, tyres and riding styles

Shock design & features

This is a gas-pressurised shock with separated oil and gas to help maintain damping consistency as temperatures rise. The STX 46 MX architecture is designed for responsive damping control and repeatable behaviour over a moto.

Tuning controls

Adjustment is provided for compression and rebound damping, plus ride height adjustment to help tailor chassis balance. These controls let you refine support, traction and attitude without changing internal valving.

Before you install

  • No spring is supplied; select the appropriate spring as noted for this unit
  • Confirm fitment for your exact model and year before installation
  • Set sag and baseline adjusters methodically, making one change at a time during testing

Serviceability/lifecycle

Like all motocross shocks, regular servicing helps maintain damping performance and seal life. Service intervals should reflect usage intensity, track conditions and maintenance practices.

Öhlins Motorcycle Suspension Warranty

New Öhlins motorcycle shock absorbers, front forks and cartridge kits supplied by Teknik Motorsport are covered by the applicable Öhlins manufacturer’s warranty against defects in materials and workmanship.

Teknik Motorsport is an authorised Öhlins Service Centre and administers warranty claims in accordance with the Öhlins warranty conditions. The service intervals below form part of the maintenance requirements for Öhlins products supplied and supported by Teknik Motorsport.

This warranty is in addition to the consumer guarantees that apply under the Australian Consumer Law.

  • Registered motorcycles — non-competition road use Five years, subject to correct application, installation, setup and servicing every: 20,000 km or two years, whichever occurs first.
  • Registered motorcycles — adventure and light off-road use Five years, subject to correct application, spring rate, setup and servicing every: 10,000 km or annually, whichever occurs first.
  • Unregistered or competition motorcycles Two years for eligible Öhlins MX and Enduro products, subject to inspection every ten hours and servicing every: 30 operating hours or annually, whichever occurs first.

Compliance with the applicable service interval is a condition of the Öhlins manufacturer’s warranty. Evidence of servicing may be required when a warranty claim is assessed.

A seal leak, loss of damping performance or internal wear arising after the prescribed service interval has been exceeded will be treated as a service or maintenance issue rather than a manufacturing defect.

Warranty repairs

Öhlins suspension products are designed to be serviced and repaired. Where a warranty claim is approved, the normal remedy is repair of the customer’s original suspension unit using genuine Öhlins replacement parts.

Replacement of a complete shock absorber, fork or cartridge kit is not automatic and would normally occur only where the product has suffered a manufacturing failure that cannot reasonably be repaired. This is at Ohlins discretion. 

Öhlins spare parts and service kits

Öhlins spare parts, seals, bushes, service kits, springs, fluids and individual components are covered only against defects present when supplied.

No fixed age-based warranty applies to wear items, service parts or consumable components. Wear, deterioration, contamination, incorrect installation and damage caused by another component are not manufacturing defects.

Öhlins gives the customer a meaningful five-year warranty on products (Units), provided the suspension is maintained as suspension should be maintained. Teknik supports that warranty locally, can inspect the product properly, and can repair it with genuine parts rather than discarding it.

SKU YA2190
Model # S46PR1C2W
Barcode # YA2190
Brand Ohlins
Shipping Weight 5.0000kg
Shipping Size 0.300 x 0.300 x 0.500m
Type Units
See our Shipping Information See our Frequently Asked Questions
Position (Front or Rear) Rear Mono
Shock Length Eye to Eye (mm) 402.0
Spring Rate No Spring/s Supplied
Type Code S46PR1C2W
Stroke Metal to Metal (mm) 103.0
Product Family STX 46 MX
Notes Spring Series 00698-xx *Replaced by DMX 0104*
Fitted Spring Sold separately, see notes.
Rec. Ohlins Oil 01304-

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