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KYB Excel-G 339138 Strut Assembly vs KYB SR4035 Strut-Plus Assembly

For a 2004 Avalon rear right, the Excel-G 339138 is the strut alone, so you reuse the original spring and mount. The SR4035 is a complete corner unit with a matched spring, mount and boot, aimed at Camry, Avalon and ES300 rear right fitments. Buyers who want a quick bolt-in repair and restored ride height pick the SR4035; buyers who already have good springs or want to tune the spring separately pick the Excel-G. Both are twin-tube, gas-charged, non-adjustable KYB units with a reputation for OE-style damping and long service life.

  • Choose the KYB Excel-G 339138 if you are replacing only the worn rear right strut on a 2004 Avalon and your spring, mount and boot are still sound.
  • Choose the KYB SR4035 if you want a pre-assembled rear right corner with a matched high-carbon spring, new mount and boot, and no spring compressor work.

Prices

  • KYB Excel-G 339138 Strut Assembly: $161.63 at VEX Motorsports (last seen Nov 13)
  • KYB SR4035 Strut-Plus Assembly: $135.81 at USAutopartsCar.com (last seen Nov 5)
  • Difference: the KYB SR4035 Strut-Plus Assembly is $25.82 cheaper than the KYB Excel-G 339138 Strut Assembly at the latest prices (Nov 5 and Nov 13)
KYB
KYB Excel-G 339138 Suspension Strut Assembly

KYB Excel-G 339138 Strut Assembly

KYB Excel-G 339138 Suspension Strut Assembly

$161.63at VEX MotorsportsChecked Nov 13
See all prices and details
Visit VEX Motorsports
Pros
  • Direct Excel-G replacement strut
  • Reuses sound original spring and mount
  • Simple choice when only the damper is worn
  • Twin-tube gas-charged design
  • Well-known OE-style damping
Cons
  • No spring, mount or boot included
  • Requires a spring compressor to swap
  • Old spring may already be sagging
  • Ride height not guaranteed to be restored
KYB
KYB SR4035 Complete Corner Unit Assembly -Strut, Mount and Spring

KYB SR4035 Strut-Plus Assembly

KYB SR4035 Complete Corner Unit Assembly -Strut, Mount and Spring

5(2 ratings)
$135.81at USAutopartsCar.comChecked Nov 5
See all prices and details
Visit USAutopartsCar.com
Pros
  • Complete corner unit ready to bolt in
  • Matched high-carbon spring restores ride height
  • New mount and boot included
  • Application-specific valving
  • Side-specific construction as the manufacturer intended
Cons
  • Higher parts content than a bare strut
  • Fitment is narrower and year-specific
  • Non-adjustable damping
  • Spring rate is fixed to the stock design

What separates them

KYB Excel-G 339138 Strut AssemblyKYB SR4035 Strut-Plus Assembly
What is in the boxStrut assembly only; spring, mount and boot are reusedStrut, coil spring, mount and boot pre-assembled
FitmentRear right, 2004 Toyota AvalonRear right, 1997-2001 Camry plus Avalon and Lexus ES300 applications
Ride heightDepends on the existing springMatched spring restores OE ride height
InstallationNeeds a spring compressor and mount transferBolt-in corner unit, no spring compressor
DampingTwin-tube, gas-charged, non-adjustable Excel-G valvingTwin-tube, gas-charged, non-adjustable, application-specific valving
SpringNot includedHeat-treated high-carbon steel, rate matched to corner weight
Noise and vibrationReuses old mount and insulatorsNew mount and boot reduce noise and vibration
Cost of partsLower parts countMore parts included

Price history

$135.81$113.00
Oct 30Nov 13
  • KYB SR4035 Strut-Plus Assembly: lowest $113.00 on Oct 30 at Tire Rack; $123.95 on Nov 13.

Prices at every store

KYB Excel-G 339138 Strut Assembly

  • VEX MotorsportsNew

    In stockReturn policy

    $161.63Checked Nov 13
    Visit VEX Motorsports
Prices and history →

KYB SR4035 Strut-Plus Assembly

  • Newparts.comNew

    In stock

    $123.95+ $11.95 shippingChecked Nov 13
    Visit Newparts.com
  • USAutopartsCar.comNew

    Availability unknown

    $135.81Checked Nov 5
    Visit USAutopartsCar.com
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $142.10Free shippingChecked Nov 13
    Visit Amazon
  • eBayNew

    Availability unknownSold by partscontainer

    $145.01Checked Nov 13
    Visit eBay

Also available at

  • PartCatalogCheck price at PartCatalog
  • ShockWarehouseCheck price at ShockWarehouse

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All 16 stores and price history →

Specs compared

SpecKYB Excel-G 339138 Strut AssemblyKYB SR4035 Strut-Plus Assembly
Position—Corner-specific
Vehicle Make—Toyota
Vehicle Model—Camry
Vehicle Year—1997-2001
Vehicle Trim—Trim level
Vehicle Engine—Engine size
Wheel Size—Wheel size
Spring Material—Heat treated, high-carbon steel
Struts—Complete Strut Assembly
Springs—Coil Spring
Mounting Hardware—Yes
Functionality Adjustability—No
Show all 34 specsShow fewer specs
SpecKYB Excel-G 339138 Strut AssemblyKYB SR4035 Strut-Plus Assembly
Spring Rate—Fine-tuned for custom vehicle design
Damping Type—Non-Adjustable
Performance Ride Height—Restores Correct Ride Height
Dampening Adjustment—No
Performance Level—OE-style performance, Performance Replacement
Design Ride Height—Correct Ride Height
Design Adjustability—No (valving)
Design Height Adjustment—No
Design Type—Strut

What reviewers say

KYB Excel-G 339138 Strut Assembly

Owners of older Avalons and similar Toyota sedans generally report the Excel-G restores a settled, factory-like ride and fits without modification. Some note it is softer than sport struts and that the improvement is best felt when both rear units are replaced together.

What people mention
  • Ride qualityPraisedOwners say the car rides settled and close to how it did when new.
  • FitmentPraisedBuyers report it bolts into the listed Avalon position without modification.
  • HandlingMixedSome find it softer than they wanted, since it is tuned for comfort, not sport.
  • Pair replacementMixedOwners note the improvement is best when both rear struts are changed together.

KYB SR4035 Strut-Plus Assembly

Owners of older Camrys and ES300s generally report the assembly restores a firm, stock-like ride and quiet operation, and installers like that it drops in without compressing springs. Complaints center on the cost of doing both rear corners and on the need to buy the matching left side separately.

What people mention
  • Ride qualityPraisedOwners say the car rides firm and controlled again, close to how it felt new.
  • InstallationPraisedThe pre-assembled unit bolts in without a spring compressor, which DIYers and shops both like.
  • Ride heightPraisedBuyers report the rear sits back at stock height after fitting.
  • PriceMixedSome find the per-corner cost high once both rear sides are replaced.

Questions and answers

Which is better for a quick rear right repair?
The SR4035. It comes pre-assembled with spring, mount and boot, so it bolts in without a spring compressor. The Excel-G 339138 needs your old spring and mount transferred over.
Will the SR4035 fit a 2004 Avalon?
KYB lists the SR4035 for Avalon, Camry and Lexus ES300 rear right applications, but the listing's year range is 1997-2001 Camry. Confirm the part number against your exact year and model before ordering.
Which lasts longer?
Both use twin-tube, gas-charged KYB dampers with a similar service life. The SR4035 also replaces the spring and mount, so the whole corner is renewed at once rather than leaving aged parts in place.
Is the SR4035 worth stepping up to over the bare strut?
Yes if your springs are original or sagging, or if you want to avoid compressing springs. The Excel-G is the better value when the spring and mount are still in good shape.
Can I adjust the ride height or damping on either?
No. Both are non-adjustable. The SR4035 restores stock ride height through its matched spring; the Excel-G keeps whatever height your existing spring gives.
Do I need to replace both rear corners?
It is good practice. Dampers wear at similar rates, and mixing a new unit with a worn one on the other side can upset handling. KYB sells left and right part numbers for the SR4035.

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Design Color—Black
Design Finish—Highly polished chrome shaft
Internal Design—Twin-tube
Gas Charged—Yes
Boot Included—Yes
Boot Color—Black
Ride Height—Stock
Quantity—Sold individually.
Lower Mount Type—Bracket
Weight—25.25 Lbs.
Spring Rate Type—Constant
color—Multicolor
size—29.000