Motorcycle Shock Spring Electronic Preload Adjusters

EPA - Electronic Preload Adjusters

Electronic preload adjusters provide rapid, accurate control of rear spring preload so sag height and ride balance adapt to changing rider, passenger or luggage loads. These plug & play and retrofit kits suit OEM shocks, aftermarket coilovers and ESA systems while keeping maintenance and tuning straightforward.

Automatic preload control for variable load conditions

  • Instantly tune sag height for solo, two-up or luggage to prevent bottoming out
  • Retrofit electronic preload collars to standard shocks without losing manual damping
  • ESA-compatible and plug & play replacement options from TracTive and other premium brands
  • Simple DIY install using a shock spring compressor

Recommended Pairings

Consider matching EPA kits with Suspension Tools, suspension electronics or TracTive upgrades (TracTive) and view ESA replacement options here. For setup guidance see maintenance and setup articles on bike maintenance, fresh oil and clutch setup.

Shop EPA - Electronic Preload Adjusters

Browse EPA kits, TracTive-compatible units and retrofit preload collar conversions to improve comfort, stability and load adaptability.

12 Products Found









TracTive Suspension

Electronic Preload Adjuster general

EPA Only
(SKU: 73BM18-E2X01-TR)
Position (Front or Rear):   Rear
Type Code:   EPA
$1,919.17
Special Order
Custom build by TracTive Netherlands for every order. Usually 6-8 weeks depending on component availability

TracTive Suspension

Tractive EPA BMW F850GS +LOW 18-

EPA Only
(SKU: 73BM18-E2X97-noPnP-TR)
Position (Front or Rear):   Rear
Type Code:   EPA
$1,919.17
Special Order
Custom build by TracTive Netherlands for every order. Usually 6-8 weeks depending on component availability

TracTive Suspension

Tractive EPA BMW R1150GS 99-03 Wilbers

EPA Only
(SKU: 73BM99-E3X02-TR)
Position (Front or Rear):   Rear
Type Code:   EPA
$1,919.17
Special Order
Custom build by TracTive Netherlands for every order. Usually 6-8 weeks depending on component availability

EPA - Electronic Preload Adjusters

Electronic preload adjusters provide rapid, accurate control of rear spring preload so sag height and ride balance adapt to changing rider, passenger or luggage loads. These plug & play and retrofit kits suit OEM shocks, aftermarket coilovers and ESA systems while keeping maintenance and tuning straightforward.

Automatic preload control for variable load conditions

  • Instantly tune sag height for solo, two-up or luggage to prevent bottoming out
  • Retrofit electronic preload collars to standard shocks without losing manual damping
  • ESA-compatible and plug & play replacement options from TracTive and other premium brands
  • Simple DIY install using a shock spring compressor

Recommended Pairings

Consider matching EPA kits with Suspension Tools, suspension electronics or TracTive upgrades (TracTive) and view ESA replacement options here. For setup guidance see maintenance and setup articles on bike maintenance, fresh oil and clutch setup.

Shop EPA - Electronic Preload Adjusters

Browse EPA kits, TracTive-compatible units and retrofit preload collar conversions to improve comfort, stability and load adaptability.