Install notes and evidence

Synergy Manufacturing source wording says: When lifting the vehicle, either through tire size or suspension lift, the axle travel needs to be limited to prevent the possibility of tire interference.. Treat this as a full suspension/lift planning item. Verify platform, lift height, gas/diesel/4xe/392 variant, shock or coilover package, control-arm path, alignment/caster, tire goal, bump stops, brake lines, driveline clearance, and final loaded vehicle weight before checkout.

Product-specific install PDFs or videos are not captured for this record yet. Treat this as a source gap before quote, checkout, or labor planning.

Suspension & liftsNeeds vehicle setup checkProduct image available

Synergy Manufacturing

Synergy Jeep JK / JKU / JL / JLU / JT Rear Bump Stop Spacer Kit

Vendor fitment: 2007-2026 JK Wrangler, JL Wrangler, JT Gladiator. Suspension & lifts fitment from the vendor source. Confirm final options and fitment on the vendor page before purchase.

When lifting the vehicle, either through tire size or suspension lift, the axle travel needs to be limited to prevent the possibility of tire interference. These rear bump stop spacers provide a solution to this interference problem by limiting the axle travel toward the frame. Fitments: Jeep Wrangler JK / JKU Jeep Wrangler JL / JLU Jeep Gladiator JT Part # Description 8858-20 2.0" Jeep JK / JL / JT Rear Bump Stop Spacer Kit 8858-30 3.0" Jeep JK / JL / JT Rear Bump Stop Spacer Kit 8858-40 4.0" Jeep JK / JL / JT Rear Bump Stop Spacer Kit Features: Bump stops bolt onto the axle bump pad and provides 2", 3" or 4" of bump stop spacing. Manufactured from CNC laser cut 1/4” high carbon steel fo...

SKU

8858-XX

Price

$150

Role

review candidate

Start build with this part Vendor/source

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Ask product-specific questions about fitment notes, install docs, and simple comparisons.

For full build planning, tire/lift/wheel combinations, or a recommendation path, use the main Ask Rig Builder advisor.Open Ask Rig Builder

Question

What lift height is this for?

Suspension lift height

This is a 2.5-3 inch lift-height family. Verify the exact engine, drive side, spring-capacity variant, and loaded vehicle weight before quoting because those choices can change final stance.

Sources

- Synergy Manufacturing product page: https://www.synergymfg.com/jeep/jeep-jt/synergy-jeep-jt-rear-bump-stop-spacer-kit.html

- Source text: Verify platform, lift height, gas/diesel/4xe/392 variant, shock or coilover package, control-arm path, alignment/caster, tire goal, bump stops, brake lines, driveline clearance, and final loaded vehicle weight before checkout.

Fitment and build notes

Vendor catalog record promoted for browsing. Final fitment, install dependencies, and shopper selection still require review before checkout.

For a lift, the last check is the complete Jeep setup: exact year/model/trim, doors, engine, lift variant, target tire size, wheel width and offset/backspacing, bump stops, flare/fender clearance, gearing, spare support, added bumper/cargo weight, and whether a shop is installing it.

Readiness

Fitment statusUseful for a shortlist, but exact vehicle setup, dependencies, or purchase path still need review.Needs vehicle setup check

Evidence levelNeeds source collection and claim-level review before it should be treated as recommendation-ready.Evidence review needed

Install docsNo product-specific install PDF, install support link, or official video is captured for this record yet.Source needed

Product imageProduct image available

Purchase pathUse for build planning or a shop quote

Visual prioritymedium

Source-backed facts

Fact summary

Models: JK Wrangler, JL Wrangler, JT Gladiator; Years: 2007-2026; Source: xcart_html; Captured: 2026-05-12