PRE-ORDER: ADOPT x NISSAN CHALLENGE circuit/spec sway bars

Front and rear set

$840.00

$840.00

A bespoke set of sway bars designed at the request of multiple SCCA/NASA drivers who have independently arrived at the same optimal sway bar configuration. Z33 drivers ask specifically for very high front stiffness, and very low rear stiffness. This bar delivers with a series of stiffness targets designed specifically for homologation use in SCCA/NASA and Nissan Challenge competition, along with common circuit settings.

End link rates displayed below were empirically tested on a spring dyno to measure their displacement vs. force graph for accurate spring rate baselines.

This product also emulates NISMO S-tune (J) stabilizer settings under part number 54600-RSZ30, which has been long discontinued.

ADOPT x NISSAN CHALLENGE FRONT sway bar:
at max setting, 31% stiffer than the current highest stiffness model (1850 lbs/in) on the market, and approaching maximum stress limits of 36mm OEM OD chromoly steel.

36mm OD
OEM reference: 960 lbs/in | 17.14 kg/mm | 100%
a. 2500 lbs/in | 44.7 kg/mm | 260% ADOPT MAX
b. 1550 lbs/in | 27.7 kg/mm | 161% typical track setting
c. 1300 lbs/in | 23.2 kg/mm | 135% Spec-Z homologation, NISMO S-tune (J) rate

ADOPT x NISSAN CHALLENGE REAR sway bar:
Softer than OEM to allow for functional rear sway bars on circuit rather than eliminating the rear sway bar entirely.

22mm OD
a. 650 lbs/in | 11.6 kg/mm
b. 375 lbs/in | 6.7 kg/mm | Spec-Z homologation, NISMO S-tune (J) rate
c. 185 lbs/in | 3.3 kg/mm

Compare to: NISMO 54600-RSZ30 (NISMO S-tune J)
Image is for reference only. The final part may have a different geometry.

ETA to market: Summer 2026

Fits:
2003-2008 Nissan 350Z (Z33)