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TeraFlex JT 1.5 inch performance spacer leveling kit

Is the TeraFlex JT 1.5 inch performance spacer leveling kit the leveling kits pick here, or just one of three?

Best fit for Gladiator shoppers who want a mild spacer level with stock-length shocks rather than a larger replacement-shock kit.

The TeraFlex JT 1.5 inch performance spacer leveling kit and the Bilstein B8 5100 ride-height adjustable suspension and the Eibach PRO-LIFT-KIT spring solve the same leveling kits need in different ways. This compare holds what each includes, where each stops fitting, and what each asks of the install side by side; price is read after that, on purpose.

Nicole, Fitment Pilot editor

Reviewed by Nicole

Fitment

2020-current Jeep Gladiator JT, with wheel and trim checks

Verify first

Use this kit when the truck is a Gladiator JT pickup and the buyer keeps the TeraFlex tire limits in view. Rubicon fenders can support the larger 35 inch planning note only when stock backspacing and compression-clearance cautions agree.

Part number
1155300
Choose it when
Best fit for Gladiator shoppers who want a mild spacer level with stock-length shocks rather than a larger replacement-shock kit.
Pass when
Pass when the truck runs into this: Wrangler JL pages without JT pickup evidence
Our cross-product compare

Same category. Different reason to buy.

Evidence level B
Best for
A documented Gladiator JT spacer leveling kit for owners who want a modest front lift while retaining stock-length shocks and checking Rubicon 35 inch tire guidance carefully.
A Bilstein 5100-based leveling family for owners who prefer shock or strut height adjustment instead of a simple spacer-only kit.
An Eibach spring-lift family for shoppers who want a mild suspension lift while keeping the exact vehicle application and alignment parts visible.
What's included
Front lift: 1.5 inches · Install type: Front coil spring spacer leveling kit without shock absorbers
Coverage type: Truck lift-kit product family
Exact contents depend on the PRO-LIFT-KIT spring SKU you select for your truck.
Product approach
Keep Rubicon fender guidance, stock wheel backspacing, rear bump-stop notes, and plastic-bumper splash guards visible before checkout.
Prefer Walmart and eBay when exact identity and seller terms are comparable.
Documented fitment only -- no standout approach beyond exact application is recorded for the PRO-LIFT-KIT spring.
Install burden
Moderate install. Stock wheel backspacing and tire diameter
Moderate install. front and rear part numbers
Moderate install. exact Eibach part number
Fitment
Confirm the exact TeraFlex JT 1.5 inch performance spacer leveling kit application for Jeep Gladiator JT pickup trucks before ordering.
Confirm the exact Bilstein B8 5100 ride-height adjustable suspension application for Ford F-150 XLT SuperCab 4x4 before ordering.
Confirm the exact Eibach PRO-LIFT-KIT spring application for Toyota Tacoma TRD Off-Road Double Cab before ordering.
Choose it when
Pick the JT 1.5 inch performance spacer leveling kit over the Bilstein B8 5100 ride-height adjustable suspension and the Eibach PRO-LIFT-KIT spring when you want the simplest, lowest-cost way to level the front.
Pick the B8 5100 ride-height adjustable suspension over the TeraFlex JT 1.5 inch performance spacer leveling kit and the Eibach PRO-LIFT-KIT spring when you want to set the front ride height yourself instead of a fixed part.
Pick the PRO-LIFT-KIT spring over the TeraFlex JT 1.5 inch performance spacer leveling kit and the Bilstein B8 5100 ride-height adjustable suspension when you want lift from engineered springs and care how the truck rides afterward.
Current decision file

TeraFlex JT 1.5 inch performance spacer leveling kit

Part 1155300

Best for
A documented Gladiator JT spacer leveling kit for owners who want a modest front lift while retaining stock-length shocks and checking Rubicon 35 inch tire guidance carefully.
What's included
Front lift: 1.5 inches · Install type: Front coil spring spacer leveling kit without shock absorbers
Product approach
Keep Rubicon fender guidance, stock wheel backspacing, rear bump-stop notes, and plastic-bumper splash guards visible before checkout.
Install burden
Moderate install. Stock wheel backspacing and tire diameter
Fitment
Confirm the exact TeraFlex JT 1.5 inch performance spacer leveling kit application for Jeep Gladiator JT pickup trucks before ordering.
Choose it when
Pick the JT 1.5 inch performance spacer leveling kit over the Bilstein B8 5100 ride-height adjustable suspension and the Eibach PRO-LIFT-KIT spring when you want the simplest, lowest-cost way to level the front.
How we compared

Built from the exact SKU paperwork, the application limits, what comes in the box, the install burden, and where each part can be bought right now. Price is read last, not first.

2in spacertubular UCAhardware x8
In the boxDrawn to explain, not a product photo.
Leveling kits owned fitment checklist visual
Visual unavailable
Illustration
Where to buy it

Seller offers

Each seller on its own terms - prices and stock reflect the date shown with each seller and can change; the seller's checkout price is final.

Paid link

Amazon

Worth a look when the exact part number is sold direct, but confirm the seller of record before you order.

Price, availability, seller details, ratings, and reviews are shown only on Amazon.

As an Amazon Associate I earn from qualifying purchases.

Available at Amazon

Other retailers to check

These other-retailer searches use the brand and part number shown on this page. We earn nothing if you buy through them.

Other retailer

Summit Racing

House fitment data and manufacturer spec sheets ride along on their pages, which makes it a good spot to sanity-check the part number.

Search with the brand and part number shown on this page, then confirm the manufacturer part number before ordering.

Search Summit Racing
Other retailer

Walmart

A broad marketplace where third-party sellers vary widely, so check who is actually selling and how returns work.

Search with the brand and part number shown on this page, then verify the exact seller, item condition, fitment, and return terms.

Search Walmart

Price checks build up as sellers are rechecked over time. The seller's checkout page has the final say; make sure stock, exact SKU, and seller details all agree before you order.

Report an issue
Direct retailer Amazon Check price and availability there As an Amazon Associate I earn from qualifying purchases.
Available at Amazon
Decision trail Check these before you buy.
Part TeraFlex JT 1.5 inch performance spacer leveling kit Part 1155300. TeraFlex resource available.
Fits 2020-current Jeep Gladiator JT pickup trucks Use this kit when the truck is a Gladiator JT pickup and the buyer keeps the TeraFlex tire limits in view. Rubicon fenders can support the larger 35 inch planning note only when stock backspacing and compression-clearance cautions agree.
Watch for Leveling Kits checkout checks Confirm suspension package, air-suspension exclusions, alignment plan, tire clearance, brake-line routing, and warranty impact before checkout.
Other retailer · Seller 2 other retailer searches Search with the brand and part number shown here, then confirm the exact part and fitment with the retailer.
Photos Category visual The photo shows the category, not this exact part; an exact product photo appears once image rights are confirmed.
If unsure Compare, read, or report If the seller page, vehicle details, or photos do not line up, compare sellers, read the guide, or report the issue.
The evidence

Fitment and install resources

Reviewed 2026-06-25

Editorial method

What we checked on this page

We check the TeraFlex JT 1.5 inch performance spacer leveling kit for exact part identity, seller options, stock and price dates, photo rights, and official resources. FitmentPilot combines automated vehicle database indexing with human automotive editorial review. Rather than presenting generic affiliate catalogs, our system evaluates the exact mechanical constraints of each chassis platform — from bolt circle geometry and motion ratios to factory package exclusions — giving truck owners complete confidence before checkout.

Sellers3 seller destinations

Paid offers and other retailer searches are labeled separately so you can choose where to check.

FreshnessConfirm stock at the retailer

Check current stock and price with the retailer before ordering.

PhotosCategory visual only

This photo shows the part category, not this exact product. Confirm SKU, size, and kit contents before ordering.

Resources3 official resources

Install, fitment, spec, or warranty resources are available before checkout.

An exact product photo appears here once image rights are confirmed.

Choose it, pass, or verify

A documented Gladiator JT spacer leveling kit for owners who want a modest front lift while retaining stock-length shocks and checking Rubicon 35 inch tire guidance carefully.

Choose it if

  • Best fit for Gladiator shoppers who want a mild spacer level with stock-length shocks rather than a larger replacement-shock kit.
  • Keep Rubicon fender guidance, stock wheel backspacing, rear bump-stop notes, and plastic-bumper splash guards visible before checkout.
  • Compare Summit, Walmart, and eBay prices while rechecking seller quality and stock for the exact 1155300 SKU.
  • Use this kit when the truck is a Gladiator JT pickup and the buyer keeps the TeraFlex tire limits in view. Rubicon fenders can support the larger 35 inch planning note only when stock backspacing and compression-clearance cautions agree.

Pass if

  • The TeraFlex JT 1.5 inch performance spacer leveling kit is not the right choice when your truck falls outside 2020-current Jeep Gladiator JT pickup trucks, or its trim, engine, and package cannot be matched to the documented application.
  • Pass when this exclusion applies: Wrangler JL pages without JT pickup evidence
  • Choose another kit when the truck needs more height, rear-load support, adjustable damping, or hardware this package does not include.

Verify

  • Stock wheel backspacing and tire diameter
  • Rear bump-stop extension need
  • Seller stock, returns, and exact 1155300 part number
  • The checked shelf is a 2024 Rubicon Crew Cab 4x4 route. Sport, Overland, Willys, Mojave, dealer-lift, plastic-bumper, aggressive-offset, and heavy accessory setups need their own clearance notes before inheriting this answer.
Workshop & DIY Guidelines

TeraFlex JT 1.5 inch performance spacer leveling kit Installation & Fitment Protocol

Front leveling kits work by adding a top-mount or preload spacer above the factory coilover strut, neutralizing the built-in factory rake. Because independent front suspension operates on a motion ratio (typically ~1:1.5 to 1:2.0), the physical spacer thickness is smaller than the resulting ride height gain. A 1.25-inch thick spacer produces approximately 2.0 inches of net lift at the wheel hub.

Install Difficulty

Shop & Bench Specs

Difficulty: Moderate (3/5)

Estimated Install Time: 2.5 – 4.0 hours (DIY Garage) / 1.5 – 2.5 hours (Pro Shop)

Required Tools

Installation Equipment

  • Heavy-duty hydraulic floor jack (3-ton+) & matching safety jack stands
  • Calibrated torque wrench (50–250 lb-ft range)
  • Metric socket & combination wrench set (15mm, 18mm, 19mm, 21mm, 24mm)
  • Ball joint separator / tie rod puller tool (prevents boot tearing)
Post-Install Safety

Post-Install Protocol

  • Mandatory 4-wheel computer alignment within 50 miles of install to set toe and camber.
  • Re-torque all chassis fasteners, strut top nuts, lower control arm bolts, and wheel lug nuts at 50 and 500 miles.
  • Re-aim headlight vertical cutoffs downward to compensate for raised front nose height.

Wear Triggers & Maintenance Checks

  • Upper ball joint binding at full suspension droop if lift exceeds 2.25 inches without aftermarket control arms.
  • Accelerated inner tire edge wear if alignment toe-in is not corrected post-installation.
  • Front CV axle boot rib-rubbing and grease weeping under sustained 4WD high-speed operation.

Chassis Fitment Context

Solid front axle geometry dictates that coil spring height translates 1:1 to lift height (unlike IFS motion ratios). However, raising the front un-rotates the axle, reducing positive caster and causing flighty highway steering. Geometry correction brackets or adjustable front lower control arms are critical on lifts 2.0" and higher.

The JL Wrangler debuted in 2018 and the JT Gladiator in 2020, replacing the JK platform with aluminum doors/hood and electro-hydraulic steering. In 2024, Jeep introduced standard side-curtain airbags, redesigned 7-slot grilles, standard 12.3-inch Uconnect screens, and full-float Dana 44 rear axles on Rubicon trims.

Pre-Installation Unboxing Verification Checklist

Step 01: Confirm Physical SKU & Labeling

Inspect outer box label against your order invoice and the manufacturer part number shown here before opening hardware bags.

Step 02: Dry-Fit & Hardware Inventory

Unpack fasteners, brackets, and instructions. Perform a preliminary dry-fit check against the vehicle before removing factory components.

Step 03: Review Torque & Thread Requirements

Identify critical torque values and whether thread locker (Blue Loctite) or anti-seize compound is required by the manufacturer.

Step 04: Plan Post-Install Calibration

For suspension, steering, or lighting parts, schedule a professional alignment and verify forward-facing ADAS sensor calibration.

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