Rear springs — other donors, rod sizes, ride height

Tags: #springs · #cross-compatibility · #price · #rear-suspension

Rear spring alternative — LESJOFORS (Mazda 6 Gen 1): LESJOFORS part 4255452 (for the Mazda 6 Wagon, 2002+) fits the X80's rear. Specs: 6.2 coils, 359mm length, diameters 131/125.5/127.5mm, 12mm wire diameter. It is an expensive option at 6,000+ RUB (RU market, March 2025) per piece, but maintains OEM-level quality; one community member installed it without modification, though some consider the cost prohibitive ¹.

Aftermarket quality warning — thinner rod diameter: a separate report warns that certain aftermarket suppliers (referenced as an "Ozon supplier") sell rear springs with a rod diameter roughly 1mm thinner than OEM; over time these visibly sag compared to originals. The recommendation is to research thoroughly before purchase and avoid cheap aftermarket springs, favoring OEM or a verified-quality source such as kitparts.ru ².

Rear springs from Mazda CX-5 — confirmed working alternative: rear springs from a Mazda CX-5 were installed as a direct replacement alternative when original FAW rear springs were unavailable. Multiple reports confirm good fitment, with one owner reporting 60,000 km without problems. The swap raises rear ride height (measured wheel-to-arch clearance of 12cm after installation), and no modification was required for fitment ³⁴.

Rear springs — Japan Parts catalog option: rear spring replacement is also available through the Japan Parts catalog (searchable via zzap.ru, e.g. partnumber ZC6416H, class JAPANPARTS). One community member confirmed successful installation with proper fitment, reporting the selected springs "all fit well" ⁵.

Rear springs — Kia Sorento cross-fit (CAT-21642H): Kia Sorento rear springs, part CAT-21642H, fit the X80 rear suspension. Coil wire thickness is 14.3mm — close to the X80's own ~13.7-14mm spec noted elsewhere on this card — and the springs seat perfectly in the lower cups without modification. Installed together with 3cm spacer blocks, they noticeably raise the rear ride height and improve suspension response versus worn stock springs, without the ride becoming excessively stiff. Multiple users in the same thread confirmed good fitment and proper seating ⁶.

Correction — Kia Sorento rear-spring part number: the Kia Sorento cross-fit rear spring documented above under part number CAT-21642H should read C4T-21642H (community correction to the earlier report) ⁷.

Rear spring reviews mixed; wire-thickness data point (Sept 2025): prompted by mixed community reviews (some call the rear springs good, others report bottoming out on speed bumps) ⁸ — brand was reported as not critical as long as the correct spring is matched by measurement ⁹ — a drive2.ru cross-reference mentions owners fitting KYB RH6416 rear shocks/springs; measured wire thickness: X80 stock spring 13.23mm vs. the GG-wagon-sourced KYB-compatible spring at 12.75mm — thinner than the ~13.6mm option mentioned elsewhere on this card ¹⁰. A separate, unconfirmed lead: Honda Accord (7th gen) front springs cross-reference to KYB part RC3427 in a parts catalog, but no community member has confirmed actually fitting them ¹¹.

Rear springs from Mazda CX-5 — independent confirmation with different clearance figure: reinforcing the CX-5 rear-spring report already on this card ³⁴, a separate owner confirms the swap noticeably raised the rear — about 15cm of wheel-to-arch clearance after installation (vs. the 12cm figure reported elsewhere on this card, likely reflecting measurement-point or ride-height differences). The CX-5 spring's upper-coil diameter is larger than stock, and a wheel alignment was performed afterward with no reported handling issues ¹².

Suffix-brand rear springs — sagged within 2 weeks (low confidence, single secondhand report): a report relayed via WhatsApp (not a direct community post) states that Suffix-brand rear springs sagged within 2 weeks of installation and were considered too soft. Not recommended for the rear based on this account; the community lacks further data to confirm or refute it ¹³¹⁴.

Measuring ride-height/clearance correctly: when checking suspension ride height or wheel-arch clearance, measure from the wheel center to the arch, not an absolute floor-to-arch distance — because tire size changes the reference point. With a 225/65/17 tire, a rough rule of thumb is a palm-width hand-opening (~8-9cm) of clearance as a healthy reference ¹⁵¹⁶.

OEM rear spring wire thickness — 14mm, vs. thinner aftermarket options (April 2026): OEM FAW X80 rear springs use 14mm wire thickness (some sources say the wire itself measures closer to 13.5mm). Common aftermarket rear springs measure only 12.7–13mm wire diameter, which changes spring rate and ride height versus the original. Community-cited part numbers for 14mm-wire alternatives include KYB RA3345, Lesjöfors 40 554 60, and Standard Springs ST119063F (the Turkish-made ST119063F is specifically advertised as fitting the FAW), but fitment reports are inconsistent — one member states these parts do not fit the X80 at all and suggests mismatched part-number claims like this may explain why some owners end up replacing their rear suspension repeatedly; checking Ozon reviews before buying is recommended ^1718192021.

Rear spring cross-fit catalog — GG, GH, CX-5, and 2.3L variants compared by wire/coil spec (July 2026): a consolidated community spec comparison for rear-spring cross-shopping. X80 OEM: ~13mm wire diameter, ~9.4 coils, 435mm hub-center-to-arch height (stock, unloaded). Mazda 6 GG universal: 12.5mm wire, 8.3 coils — too soft, raises the car only 1–2cm and sags again within weeks (see the failed swap below). Mazda 6 GH: wider spring base than GG. Mazda CX-5: 13.25–14mm wire in various batches, 365–370mm height. Suffix SZ1303 (already documented on the front springs card) actually originates from GH, not GG. Mazda 6 GG 2.3L-engine variant: 12.75mm wire, 9 coils — closer to stock and reported to lift the rear by roughly +2cm. One owner also test-fit Zekkert SF-2322 (CX-5-cross-referenced, 13.3mm wire, 369mm height per the manufacturer site) but could not confirm its narrow-end diameter matched the X80's factory spacer/seat. Bottom line reiterated by the community: stop trading brand names and match wire diameter + coil count + free height against these numbers before buying ^{2223242526272829303132333435}.

Mazda 6 GG universal rear spring swap — disappointing real-world result: one owner's full write-up of installing Mazda 6 GG-universal ("Klakson") rear springs: expected a large lift (sagged stock height 348mm → new spring's rated 384mm) but actual gain was only +1cm (with spacers adding another +15mm) — "no miracle happened." Cost: ~3,000₽ + 5 hours of labor. Conclusion: GG-universal springs are not a good rear fix for the X80 due to their thinner wire and lower coil count versus stock ³¹.

Rear ride-height measurement method — 435mm stock reference, three ways to check it: to evaluate spring wear or test a new spring: raise the rear wheel completely off the ground and measure from the wheel center to the top of the wheel arch — stock spec is 435mm. Cross-check note: measuring the same car from different reference points (from above at the fender lip vs. from below at the rocker panel vs. eye-level at the fender) gave noticeably different numbers on the same vehicle (465mm / 445mm / 455mm respectively in one example) — pick one consistent method and don't compare numbers across methods ²⁸³⁶³⁷.

Rear springs from Mazda CX-5 — adapter-plate obstacle (July 2026): reinforcing the CX-5 rear-spring cross-fit already documented on this card, one owner who went ahead with a CX-5 swap reports it is workable but not simple: a custom adapter plate is needed because off-the-shelf automotive adapters (VAZ/UAZ/GAZ patterns) do not fit. Needed adapter specifications: hole diameter 71-75mm, outer diameter 128-130mm (matching the spring's perimeter), inner diameter for the spring seat 100-102mm. Springs from a Gazelle Business/GAZ Nexxt donor almost fit but have an oversized center hole ³⁸³⁹⁴⁰.

Alternative rear springs from BMW X3 (new cross-fit, Aug 2026): a further cross-fit candidate for the rear: BMW X3 rear springs, height 375-380mm, rod diameter 13-13.3mm, maximum outer diameter 122mm (versus the X80's stock 131mm), with a slight narrowing at both edges and 7.2 coils (versus the X80's stock 6.5). Non-original (aftermarket) pricing is reported as significantly cheaper than other options. Untested prediction from the poster: it may seat on the transverse rear arm and stock rubber mounts (or the "classic"/VAZ-style spacers already discussed elsewhere on this card), or may need spacers — not yet confirmed by an actual installation ⁴¹.

Rear spring development/manufacturing project announced (Sept 2026): a community member (Айрат) who had previously mentioned developing a rear spring for the FAW Besturn X80 reports the factory has now quoted him a price, and he can sell the springs at 3,500 RUB (RU market, September 2026) each with quality described as excellent; he is deciding between a polymer/powder coating and a standard anticorrosion treatment, and is looking for beta testers before a wider production run (he plans to fit a set himself). In the same thread, another owner reports his own rear coils have partially collapsed ("half a turn folded over") at 25,000 km but is not yet bothered enough to replace them since he drives alone; he'd be interested in a set from this new run and separately asks whether the "polymer coating" mentioned is powder coating. Contact for this project is via VK/Max direct message rather than the Telegram group, due to intermittent VPN access ^4243444546.

Rear spring rod diameters (Victor, Sep 2026). Stock X80: 13 mm; Mazda 6 GG estate: 12.75 mm; hatchback: 12.5 mm; sedan: 12 mm, the softest — so Mazda GG rear springs are not a like-for-like fit ⁴⁷⁴⁸. Владимир Хохлов said that ordering by VIN he received springs with only an 11.5 mm rod and the rear sat lower than the front, so he bought estate springs (12.5 mm by his figure) ⁴⁹; Victor ran 12.75 mm and found it not enough, and says 12.5 mm is the hatchback spring, which will sag just the same ⁵⁰. Serega fitted Mazda 6 GG estate rear springs (a Zekkert pair, listed at about 3,479 RUB, RU market, Sep 2026) together with Ozon spacers; they are very soft, with two children in the back the rear sat down and he had to lower the headlights with the corrector ⁵¹⁵². He then bought one slightly used original spring and 3 mm spacers, which he calls excellent ⁵¹. Victor agrees estate springs are soft but not suited to loads or passengers ⁵³.

See also: - Rear springs — failure and pneumatic fixes (Hub) - Rear springs — failure symptoms and diagnosis - Rear springs from Mazda 6 — cross-fit reports - Rear spring spacers and lift - Rear pneumatic bellows — field reports and pressures

Part of the rear-springs set; mentions of "this card" or "elsewhere on this card" may refer to the sibling cards below.

Media

LESJOFORS spring packaging label showing part 4255452, Mazda 6 Estate/Wagon applicability, and a 3-year warranty marking

Installed Kia Sorento rear spring (CAT-21642H) showing fitment in the X80 lower spring cup

Raised rear ride height after installing the Kia Sorento spring with 3cm spacer blocks

Marketplace listing screenshot: Japan Parts rear spring for Mazda CX-5 (KE), priced 1,500 RUB, reserved, sold via "Japan Parts Moscow" (Avito)

Zekkert listing: pair of rear springs for Mazda 6 GG wagon (2002 onward), 3,479 RUB (58% off 8,396 RUB base price); title 'Пружины Задние (2шт.) Мазда 6 GG wagon'

Related pages

• Rear springs — failure and pneumatic fixes
• Front springs — aftermarket brands and prices
• Front springs — ride height and settling
• Coil springs — aftermarket numbers and sag
• Rear springs from Mazda 6 — cross-fit reports

Sources

This page is compiled from 53 community messages. Every fact carries a numbered reference to its original author and message.

Last updated: 2026-10-29