Rancho 07-18 Wrangler JK Coil Spring Kit - Master Part Number - One Box

SKU: RHORS66139B

Suspension Leveling & Lift Kits

RHO Coil Spring Kits

Rancho

Rancho 07-18 Wrangler JK Coil Spring Kit - Master Part Number - One Box

SKU: RHORS66139B

Suspension Leveling & Lift Kits

RHO Coil Spring Kits

LAST ONE! Est Ship 4-7 days. LAST ONE! This is the last unit at our distribution centre. Contact us if you need more. The ETA is the approximate time required to prepare your order for dispatch.

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Description

Get your 4-door Jeep® Wrangler JK Unlimited ready for a day on the trail with the Rancho® 2-in. Progressive Sport suspension system. This premium suspension system features front and rear progressive rate coil springs specifically tuned to deliver superior on-road comfort and off-road performance. Tested to comply with NHTSA FMVSS126, the kit works with the vehicle’s electronic stability system.

Application Summary

2018 Jeep Wrangler JK (Front and Rear) (Qualifier: Raises Front 2.0 (in), Raises Rear 2.0 (in), The following front shock absorber(s) are compatible with this suspension system: RS55326, RS77326, RS999326, The following rear shock absorber(s) are compatible with this suspension system: RS55330, RS77330, RS999330, Black); 2007-2017 Jeep Wrangler (Front and Rear) (Qualifier: Raises Front 2.0 (in), Raises Rear 2.0 (in), The following front shock absorber(s) are compatible with this suspension system: RS55326, RS77326, RS999326, The following rear shock absorber(s) are compatible with this suspension system: RS55330, RS77330, RS999330, Black)

Part Type

Suspension Lift Kit

Data: v4.2 - Upd: 2026-09-29 18:19:51

Features

BUILT FOR THE TRAIL -- Designed to fit up to 33-in. tires, get 2-in. of additional ground clearance needed for off-road driving (can accommodate 35-in. tires with trimming; aftermarket bumpers, sliders, winches, etc. affect lift height)
BUY WITH CONFIDENCE -- Comes with Rancho’s limited lifetime warranty
COMPATIBILITY -- Designed for 4-door Jeep Wrangler JK Unlimited
COMPLETE PERFORMANCE UPGRADE -- Transform your suspension with Rancho geometry correction bracket (RS62103) or combine with Rancho adjustable control arms (RS66155B, RS66156B and RS66157B, RS66158B); sold separately
COMPLETE SOLUTION -- Front and rear progressive rate coil springs, front bump stops, rear brake line relocation brackets and mounting hardware; shocks sold separately
EASY TO INSTALL -- Bolt-on installation for an easy upgrade that complies with NHTSA FMVSS126 standards
NOTES -- Compatible with Jeep factory electronic stability system, it allows the use of OE wheels and tires and is designed with 33-in. tires using 17-in. wheels with 4.5-in. backspacing (tire size varies between manufacturers)
SUPERIOR PERFORMANCE -- Front and rear progressive rate coil springs, specifically tuned to provide superior on-road comfort and off-road performance

Specifications

Product Attributes - Brand: Rancho
Product Attributes - Manufacturer's Part Number: RS66139B
Product Attributes - Part Type: Suspension Leveling & Lift Kits
Product Attributes - Product Line: Rancho Suspension Lift Kits
Product Attributes - UPC: 039703014366
Product Attributes - Lift Style: Suspension Lift Kit
Product Attributes - Primary Front Lift Component: Coil spring
Product Attributes - Primary Rear Lift Component: Coil spring
Product Attributes - Front Shocks/Struts Included: No
Product Attributes - Rear Shocks/Struts Included: No
Product Attributes - Brake Lines Included: No
Product Attributes - Hardware Included: No
Product Attributes - FMVSS 126 Certification: Yes
Product Attributes - Quantity: Sold as a kit.

Reference Information

Brand Name/s	Rancho
StreetFX SKU	rhoRS66139B
SFX Item ID	4249727
Supplier Item Code	4249727
Manufacturer SKU	RS66139B
Manufacturer UPC	39703014366
Alternative References	RANRS66139B, ROSRS66139B