How to Set Sag on a 2017 Beta XTRAINER

Shop parts for a 2017 Beta XTRAINER Dirt Bike.

This MotoSport-exclusive guide walks you through setting suspension sag on a 2017 Beta XTRAINER so your bike rides predictably on singletrack, rock sections, and flowing trails. The steps below cover tools, measurements, adjustments, and model-specific notes every XTRAINER owner should know.

Tools & prep

  • Metric socket set, open-end wrenches, and a spanner for preload collars
  • Soft tape measure or ruler marked in millimeters
  • Assistant to steady the bike while you measure
  • Flat level surface and a bike stand (optional)
  • Riding gear and typical gear load (boots, knee braces, hydration pack) for rider sag measurement

Understanding sag targets

For trail & enduro-oriented bikes like the XTRAINER, aim for rider sag of roughly 25–30% of total suspension travel front and rear. Static sag (bike-only) should typically be in the 5–10mm range more than fully extended position, depending on stock spring rates. Using percent of travel keeps settings consistent across different XTRAINER displacements.

Find your XTRAINER travel numbers

Before you begin, confirm front and rear travel for your 2017 XTRAINER model in the owner manual or on your bike's frame stamping. If you cannot find an exact number, use the measurement method below to compute percent sag from millimeter changes.

Measuring static sag (bike-only)

  1. Fully extend the suspension and measure from a fixed reference point on the rear fender or fork leg to a point on the swingarm or triple clamp. Record as Fully Extended (FE).
  2. Put the bike on the ground with the stand up and let it settle with no rider weight. Measure from the same two points. Record as Bike-On-Ground (BOG).
  3. Static sag = FE minus BOG. If static sag is excessive or zero, inspect springs and linkage for binding or damage before proceeding.

Measuring rider sag (race/ride setting)

  1. With your riding gear on, mount the bike in the normal riding position. Have an assistant hold the bike vertical and steady (don't partially compress the forks by leaning).
  2. Measure from the same reference points. Record as Rider-On-Ground (ROG).
  3. Rider sag = FE minus ROG. Convert to percent: (Rider sag / total travel) × 100.

Adjusting preload

If rider sag is below 25% of travel, you need less preload (softer) or a softer spring; if sag is above 30% you need more preload (stiffer) or a stiffer spring. Adjust preload at:

  • Front forks: increase preload by adding preload spacers or turning preload collars if fitted. Many XTRAINER forks use a threaded collar – turn clockwise to increase preload (reduce sag), counterclockwise to decrease.
  • Rear shock: use the preload adjuster collar on the shock body or remote ring. Turn clockwise to compress the spring (reduce sag), counterclockwise to reduce preload (increase sag).

Re-check and fine-tune

  1. After every 2–3 turns of preload collar, repeat the rider sag measurement. Small changes matter.
  2. Work toward 25–30% rider sag front and rear. If you reach collar travel limits, change spring rates.
  3. Once sag is set, check ride height and balance. If the bike feels nose-heavy or tail-heavy, adjust spring rates or preload proportionally to restore neutral geometry.

Compression & rebound basics

After sag is correct, set damping roughly to factory middle settings. Typical starting points:

  • Rebound: 8–12 clicks from softest (adjust to control return without packing)
  • Compression: 8–12 clicks from softest (adjust to control bottoming without harshness)

Fine-tune on a local trail: too much front dive on braking = more front compression damping; pogoing on whoops = more rear rebound damping.

2017 Beta XTRAINER-specific notes

  • The XTRAINER is designed as a user-friendly two-stroke trail bike with forgiving suspension geometry. Stock springs are balanced for an average-weight rider; if you ride heavier or carry gear, plan to change spring rates rather than maxing out preload collars.
  • Rear linkage on the XTRAINER amplifies shock movement — make sure linkage bearings are clean and greased. Binding or worn bearings will give inconsistent sag readings and harsh behavior.
  • Some 2017 XTRAINER forks have adjustable spring preload collars and accessible shock preload — keep a spanner and clean rag in your tool kit. If you have clicker compression or rebound adjusters, note their positions before changing so you can return to the baseline.
  • Because the XTRAINER is often used on technical terrain, err toward slightly softer settings for traction and small-bump compliance. Avoid excessive softening that causes bottoming on big hits.
  • If you upgrade tires, wheels, or add luggage racks, re-check sag under the new loaded condition.

When to change springs

  • If you cannot reach target sag with available preload adjustment.
  • If you find yourself at maximum preload while still bottoming frequently.
  • If the bike feels harsh and underdamped even after proper damping setup — spring rate may be too high for trail use.

Final checklist

  • Static and rider sag measured and within 25–30% of travel
  • Preload collars not at extremes; if they are, consider different spring rates
  • Linkage bearings inspected and greased
  • Damping set to mid-range and fine-tuned by feel on trail
  • Re-check sag after a test ride and after the first few rides as springs settle

Proper sag unlocks the XTRAINER's natural balance and makes the bike more confident on tight technical sections without sacrificing stability on faster trails. Set sag methodically, log your settings, and adjust in small steps until the bike matches your weight and riding style.

Related Shopping Categories

Shop Suspension Tools for a 2017 Beta XTRAINER Dirt Bike.

Shop Fork Oil for a 2017 Beta XTRAINER Dirt Bike.

Shop Suspension Bearings for a 2017 Beta XTRAINER Dirt Bike.

Shop Fork Components for a 2017 Beta XTRAINER Dirt Bike.

Shop Suspension Parts for a 2017 Beta XTRAINER Dirt Bike.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.