The NEW RS66115B Crawler Long Arm Kit is the result of continuous engineering enhancements by Rancho’s research and design team to give you the best possible onand off-road experience for your JK. The new and improved Long Arm Kit includes progressive rate coil springs and fully adjustable extended length control arms with D2 bushings to give you improved comfort, durability and worry free operation. This kit also features our new heavy-duty front and rear adjustable track bars with D2 bushings to center the axles. The D2 bushings found in our control arms and track bars feature PTFE for grease-free operation allowing the sleeve to rotate in the bushing without resistance reducing wear. A transmission cross member RS886101 (2011-07) or RS886102 (2018-12) must also be ordered with this kit to make it complete. Exhaust cross over pipe RS720003 is required for (2018-12) when not replacing the front driveshaft. The RS66115B supersedes our RS66105 and RS66105B kits. The Rancho brand offers a Limited Lifetime Warranty** for this suspension system.
- Maximum Tire Size: 37″
- Wheel Backspacing: 4.5″
- During high articulation events, the front drive shaft may contact exhaust or transmission oil pan. A smaller diameter drive shaft is suggested for optimal performance.
Required Parts by Manufacturer:
- 2007-2011 Jeep Wrangler JK models require a Transmission Cross Member, RS-886101, for installation.
- 2012-2017 Jeep Wrangler JK models require a Transmission Cross Member, RS-886102, for installation.
- A Crossover Exhaust Pipe, RS-720003, is required for all 2012-2017 Jeep Wrangler JK models when NOT replacing the front driveshaft.
- 2007-2017 Jeep Wrangler JK
- 2007-2017 Jeep Wrangler Unlimited JK
Year(s): 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017
Features and Benefits:
- High-articulation front and rear long arm design
- Designed for on and off-road performance
- 100% bolt-on system
- (2) Front Dual Rate Coil Springs
- (2) Rear Dual Rate Coil Springs
- (2) Front Lower Control Arms
- (2) Rear Lower Control Arms
- (2) Rear Upper Control Arms
- (2) Front Sway Bar End Links
- (2) Rear Sway Bar End Links
- (2) Caster Links
- (2) Front Brake Lines
- (2) Rear Brake Lines
- (2) Rear Brake Line Brackets
- (2) Front Bump Stop Spacers
- (2) Rear Bump Stop Spacers
- (2) Control Arm Brackets
- (1) Front Adjustable Track Bar
- (1) Rear Adjustable Track Bar
- (1) Rear Track Bar Axle Bracket
- (1) U-Bolt