REAR SHOCK
Rear Coilover Shock — Remote Reservoir
Price
$890.00
● In stock
Quantity
Matched spring rate from rider weight. 7-position compression, 4-position rebound.
About this item
A piggyback rear shock built for electric dirt bikes that pile on hours of fast, technical riding. The FASTACE rear shock uses a separate compression / rebound piston layout with a high-flow piggyback reservoir, dual-stage compression, and a rider-weight-matched coil spring.
On the bench, every shock gets its damping verified against our reference curves. On the trail, the result is a shock that doesn't fade on long descents, doesn't pack on rapid hits, and doesn't feel disconnected from the rider's input the way many stock shocks do above 25 °C.
Direct-fit on the bikes listed below; no eyelet adapters, no relinkage required. Most installs take 30–45 minutes.
Features
- Piggyback reservoir for cooler running and consistent damping
- Dual-stage compression (low / high speed) externally adjustable
- Rebound externally adjustable (24 clicks)
- Coil spring pre-installed to match rider weight + gear
- Hard-anodised body, machined aluminium piggyback
- Pre-tuned for trail, enduro and aggressive race use
Specifications
- Eyelet-to-eyelet
- 330 mm
- Stroke
- 90 mm
- Travel (at wheel)
- 240 mm
- Reservoir
- Piggyback, 12 mm bore
- Compression adjust
- Low + High speed (external)
- Rebound adjust
- External, 24 clicks
- Spring
- Coil, weight-matched
- Body
- 7075 aluminium, hard anodised
- Weight
- 1.85 kg (with spring)
- Finish
- Black with red anodised reservoir
Fitment
Direct-fit on these bikes — no adapter brackets, no proprietary hardware.
Sur-Ron Light Bee
More control on hard hits fork · MORE ROOM FOR BIG IMPACTS shock
Sur-Ron Ultra Bee
More control on hard hits fork · MORE ROOM FOR BIG IMPACTS shock
Talaria Sting
More control on hard hits fork · MORE ROOM FOR BIG IMPACTS shock
Talaria XXX
More control on hard hits fork · MORE ROOM FOR BIG IMPACTS shock
E-Ride Pro SS
More control on hard hits fork · MORE ROOM FOR BIG IMPACTS shock
Spring rate selection
Pre-installed to match your weight at order. Use this chart if you re-spring later.
| Rider weight (with gear) | Recommended rate | Use case |
|---|---|---|
| 60–75 kg | 400 lb/in | Trail riding, lighter rider |
| 75–90 kg | 450 lb/in | Most riders, default option |
| 90–105 kg | 500 lb/in | Aggressive enduro, heavier rider |
| 105 kg+ | 550–600 lb/in | Race / DH — contact us for valving |
Setup & install
Most installs take 40–60 minutes with standard moto shop tools. Full instructions ship with the product.
Support the bike under the swingarm and remove the rear wheel.
Remove the upper and lower shock bolts; lift the stock shock out.
Install the FASTACE shock with reservoir oriented away from the airbox / battery to avoid heat soak; torque to manufacturer spec.
Reinstall the rear wheel and swingarm hardware.
Set static sag to 30–40 mm with rider in full gear; adjust the preload collar.
Set rebound to 12 clicks from fully closed; low-speed compression to 10 clicks; high-speed compression to 1.5 turns from closed as a starting point.
Maintenance
- Check static sag every 10 ride hours.
- Service the shock (oil + nitrogen recharge) every 80–100 hours.
- Inspect the shaft for nicks after every wash; small nicks can be polished, deep ones need replacement.
- Keep the reservoir hose free of zip-ties or contact with the swingarm.
Frequently asked questions
Q01Will this shock fit my bike?
Direct-fit on the bikes listed in the Fitment section. No eyelet shims, no linkage modification.
Q02Do I need to specify my weight when ordering?
Yes. We size the spring and tune the compression / rebound to your weight + gear at the factory.
Q03Will the piggyback clear my battery / airbox?
Yes — we mount the reservoir to clear all OE components on the supported bikes. If you've added an aftermarket battery enclosure, send us a photo before ordering.
Q04Can I revalve it later?
Yes. The shock can be opened by any reputable suspension shop. We also offer a flat-rate revalve service from our Xi'an facility.
Q05What's the warranty?
24 months from purchase against manufacturing defects. Crash damage, blown seals from impact and modifications by unauthorised parties are not covered.
Need a tuning recommendation?
Send us a video clip of your terrain and your weight; we'll reply with a starting setup.