SPL Parts Front Caster Rods, Toyota GR Supra A90/A91 & BMW Z4 G29 | SPL TR G29
This product is currently out of stock at StraightSixImports and must be brought in from the manufacturer. If you're working under a specific timeline, please contact us before ordering to confirm lead time and availability.
SPL Parts Adjustable Front Caster Rods for GR Supra and BMW Z4
The SPL Parts SPL TR G29 front caster rods provide caster and anti-dive adjustment for the 2020+ Toyota GR Supra A90/A91 and 2019+ BMW Z4 G29. Sold as a pair, these complete tension rods combine billet aluminium construction with PTFE-lined FK USA spherical bearings to reduce bushing deflection and allow more precise front suspension setup. Ships fast across Canada and the US.
Adjustment Features
- Adjustable caster to tune steering geometry for the vehicle's alignment goals.
- Supplied spacers allow adjustment of front anti-dive geometry.
- Rod-length adjustment can help position the front wheels for a custom suspension setup; tyre clearance must still be checked.
- PTFE-lined FK USA spherical bearings reduce the compliance associated with factory rubber bushings.
For broader front track-width and camber tuning, SPL describes using these rods together with its separate FLCA G29 front lower control arms and adjustable camber plates. Those components are not represented as included with this pair.
Vehicle Fitment
- 2020+ Toyota GR Supra, A90/A91.
- 2019+ BMW Z4, G29.
Confirm the exact vehicle and existing suspension configuration before ordering. Fitment is not established here for earlier Supra generations, earlier Z4 chassis or other BMW models.
Construction and Specifications
- Brand: SPL Parts
- Part number: SPL TR G29
- Product: Complete adjustable front caster rods / tension rods
- Quantity: One pair
- 6061-T6 billet aluminium arms, clamps and clevis, black anodized
- 4140 chromoly clevis stud
- 6061-T6 aluminium adjustment spacers
- Zinc-plated Class 10.9 metric hardware
- Ti-6Al-4V titanium clamp screws, blue anodized
- Manufacturer-listed weight: 4.24 lb / 1.92 kg per side
Installation and Ownership Notes
Have a qualified suspension specialist install and align the vehicle using SPL's current instructions. Maintain the specified thread engagement and fastener torque, and inspect clearances at the chosen settings. Adjustment of caster, wheel position or anti-dive should be treated as part of the complete suspension setup rather than an isolated change.
Spherical bearings trade some factory isolation for more direct feedback. Rough-road impacts and road or tyre noise may be more noticeable, and some setups may be more prone to tramlining. No fixed adjustment range, tyre-clearance guarantee or lap-time improvement is claimed.
Ships fast across Canada and the US.