Nissan Silvia S15 is an iconic Japanese sports car that, even after decades, remains the standard for drifting and tuning. Among the many aero kits, it is Rocket Bunny stands out for its aggressive design, improved aerodynamics and “must-have” status for enthusiasts. But before buying a body kit, it’s worth understanding the nuances: from compatibility with the body to the subtleties of installation and legal aspects in Russia.

In this article we will analyze in detail all versions of body kits Rocket Bunny for S15, compare them with analogues (for example, Pandem or Liberty Walk), we will analyze the effect on aerodynamics and tell you how to avoid typical installation mistakes. We will pay special attention to engines SR20DET And CA18DET — how their modifications are combined with the wide wheel arches of the body kit. If you are planning to collect S15 in style kaido racer or bosozoku, here you will find answers to key questions.

1. What is Rocket Bunny for Silvia S15: history and design features

Brand Rocket Bunny (formerly known as Tra Kyoto) was founded in Japan in 2008 and quickly gained popularity due to its unique approach to widebody body kits. Unlike European manufacturers who often focus on racing functionality, Rocket Bunny focuses on aggressive street style with cultural references kaido racers 80s

body kit for Silvia S15 Available in several versions:

  • 🔹 Version 1 — a classic version with moderately widened arches (+40 mm front, +50 mm rear) and an integrated splitter.
  • 🔹 Version 2 — more extreme geometry, extension up to +60 mm, additional air intakes on the hood and wings.
  • 🔹 Version 3 (Pandem) - a joint project with Liberty Walk, includes an extended rear diffuser and “recessed” headlights (requires modification of optics).

Design Feature - use of carbon fiber with metal fasteners, which reduces weight by 30–40% compared to fiberglass, but requires careful installation. For example, front bumper Version 2 has built-in channels for cooling the brakes, which is critical when used with Brembo 6-pot or similar systems.

⚠️ Attention: Body kits Rocket Bunny Version 3 are not certified for public roads in Russia. Their installation can lead to problems when passing technical inspection, especially if the wheel width exceeds +50 mm from standard.
📊 Which tuning style is closer to you?
  • Kaido Racer
  • Bosozoku
  • Time Attack
  • Stance
  • Other

2. Compatibility with body and engines: SR20DET vs CA18DET

Body kit Rocket Bunny designed taking into account the characteristics of the body Silvia S15 (code S15), but there are nuances:

  • 🔧 Front bumper compatible with all versions, but for Spec-S (with CA18DET) the radiator mounts may need to be modified.
  • 🔧 Rear arches in Version 2/3 require cutting of the original metal - this is an irreversible process.
  • 🔧 Hood only suitable for models with SR20DET (the height of the air intake is designed for the intercooler GReddy or HKS).

For engine CA18DET (installed on early S15 And 180SX) you will need:

  1. Modification of the front bumper mounts due to a different radiator layout.
  2. Replacing a standard intercooler with a low-profile one (for example, Nismo), since the standard one does not fit into the hood air intake.
  3. Exhaust system modification - rear diffuser Version 3 designed for a central exit, and not for double “guns”.

Engine Rocket Bunny compatible Additional improvements Recommended turbo kit
SR20DET 100% (all body kit versions) Intercooler installation GReddy FMIC Tomei M82 or Garrett GTX3582
CA18DET Partial (needs improvement) Low profile intercooler, bumper modification HKS GT-SS or Blitz DD
SR16VE (NA) Limited (only Version 1) Additional cooling (oil cooler) Turbokit Jim Wolf Technology
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If you have S15 Spec-R with SR20DET, check compatibility with Nismo S-tune suspension - a ground clearance of 80 mm may be insufficient for Version 3 due to the risk of touching the diffuser.

3. Installing the body kit: step-by-step instructions and common mistakes

Installation Rocket Bunny on Silvia S15 takes 3–5 days depending on the version and experience of the specialist. Main stages:

  1. Dismantling standard elements: removal of bumpers, fenders, rear arches. It is important to save the fasteners for reassembly.
  2. Fitting and cutting (for Version 2/3): widening the wheel arches with a grinder or plasma cutter.
    ⚠️ Caution: Incorrect cutting may weaken the rigidity of the body. Use amps from Nismo for the rear arches.
  3. Attaching the body kit: metal brackets are fixed by welding, carbon fiber panels - by rivets or bolts.
  4. Painting and protection: carbon fiber requires a special primer (for example, 3M 05993) before painting.

Typical mistakes:

  • 🚫 Ignoring alignment of gaps between panels - leads to squeaks and vibrations at speeds above 140 km/h.
  • 🚫 Using cheap analogue fastenings - original brackets Rocket Bunny can withstand loads up to 200 kg/m².
  • 🚫 Incorrect setting camber angles after installing wide arches. Optimal values for drifting: -3.5° front, -2.0° rear.

Remove bumpers and optics|Check the geometry of the body with a laser level|Order reinforced fastenings (article RB-S15-KIT)|Prepare a welding machine and a plasma cutter|Buy a primer for carbon fiber-->

4. Effect on aerodynamics: myths and real tests

The manufacturer states that the body kit Rocket Bunny Version 2 increases downforce by 15–20% due to the splitter and rear wing. However, independent tests (for example from Super Street Magazine) show more modest numbers:

  • 📉 Splitter adds ~12 kg downforce at 160 km/h, but increases drag by 8%.
  • 📉 Rear diffuser effective only with ground clearance less than 90 mm. On a standard suspension its influence is minimal.
  • 📉 Side Skirts reduce turbulence, but only slightly (effect ~3–5%).

For comparison, body kit Liberty Walk for S15 gives 25% more downforce, but weighs 40% more. Rocket Bunny - a compromise between style and functionality.

If your goal is drift, please note:

  • 🔧 Installation additional canards on the front fenders (art. no. RB-S15-CANARD).
  • 🔧 Replacing the standard rear wing with Spoon Sports or Voltex - this will add ~25 kg downforce.
  • 🔧 Settings differential (optimally: 1.5-way LSD for the street, 2-way for the track).

Wind test results

In testing at the test site Tsukuba Circuit Silvia S15 with Rocket Bunny V2 showed a lap time 1.2 seconds slower than with the body kit Tommy Kaira, but 0.8 seconds faster than the stock version. The difference is due to better controllability at high speeds due to reduced lifting force.

5. Cost of body kit and components in 2026

Prices for original kits Rocket Bunny for S15 vary depending on version and material. Current prices (including delivery to Russia):

Kit Material Price, ₽ Notes
Version 1 (full) Carbon fiber 480 000 – 550 000 Includes bumpers, arches, hood, splitter
Version 2 (full) Carbon fiber 650 000 – 720 000 Requires body cutting, + fastening
Version 3 (Pandem) Fiberglass 580 000 – 630 000 Without hood, compatible with Liberty Walk
Tail lights Rocket Bunny Polycarbonate 85 000 – 110 000 Requires re-soldering of wiring

Additional costs:

  • 💰 Installation: from 150,000 ₽ (without painting) to 300,000 ₽ (with cutting and welding).
  • 💰 Suspension modifications: springs Tein Street Basis (~60,000 ₽) or coilovers Ohlins DFV (~250 000 ₽).
  • 💰 Wheels and tires: for Version 2 you will need disks 18x10.5J ET+15 (For example, Work Meister S1) and tires 245/40R18.

⚠️ Attention: When ordering from Japan, please note duties (up to 30% of the cost) and VAT (20%). Legal import through a dealer (for example, JDM Garage Russia) is cheaper than “gray” schemes.
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Full tuning S15 in style Rocket Bunny (including engine and suspension) costs 1.8–2.5 million rubles. Saving on components often leads to problems with body geometry and aerodynamics.

6. Legal aspects: is it possible to travel with Rocket Bunny in Russia?

In Russia body kit Rocket Bunny falls under Technical Regulations of the Customs Union 018/2011, which regulates changes in the design of vehicles. Key points:

  • ⚖️ Body width: excess by more than 50 mm requires from standard examination and making changes to the PTS.
  • ⚖️ Lighting: tail lights Rocket Bunny are not certified - their installation is equivalent to changing lighting fixtures (fine 500–1000 ₽ according to Art. 12.5 Code of Administrative Offences).
  • ⚖️ Clearance height: less than 100 mm may cause prohibition of operation (clause 3.9 of the List of faults).

How to legalize changes:

  1. Pass preliminary examination in an accredited center (for example, US).
  2. Get test report for safety compliance.
  3. Make changes to the PTS through the traffic police (cost ~15,000 ₽).

An alternative option is to register the car as "retro car" (if you are over 30 years old), which simplifies the procedure, but imposes restrictions on participation in competitions.

7. Rocket Bunny Alternatives: Comparison with Pandem and Liberty Walk

If Rocket Bunny seems too extreme or expensive, consider alternatives:

Brand Benefits Disadvantages Price (full set)
Pandem More aggressive design, compatible with Liberty Walk Heavy (fiberglass), worse aerodynamics 500 000 – 580 000 ₽
Liberty Walk Best downforce, suitable for track use Difficult installation, high weight 700 000 – 850 000 ₽
Tommy Kaira Road legal, improved cooling Less pronounced style 450 000 – 520 000 ₽
Origin Lab High quality carbon fiber, light weight Limited availability in Russia 600 000 – 750 000 ₽

The choice depends on the goals:

  • 🏁 For drift optimal Rocket Bunny V2 or Liberty Walk.
  • 🚗 For everyday driving — Tommy Kaira or Version 1.
  • 🏆 For show cars — Pandem or Origin Lab.

FAQ: Frequently asked questions about Silvia S15 Rocket Bunny

❓ Is it possible to install Rocket Bunny on S14?

No, the body kit was developed specifically for the body S15. For S14 there is a separate line Rocket Bunny, but it is incompatible in terms of fastenings and geometry. Exception: rear arches Version 1, which can be adapted with modifications.

❓ What clearance is optimal for Version 2?

For street driving - 80–90 mm (with coilovers Tein Flex Z). For the track - 60–70 mm, but this will require installation crankcase protection and improvements to the exhaust system.

❓ Is body reinforcement necessary after installation?

Yes, especially for Version 2/3. It is recommended to install:

  • 🔧 Strengthening the rear arches (Nismo S15-RB).
  • 🔧 Engine compartment spacers (Cusco or Spoon).
  • 🔧 Reinforced subframes (Megan Racing).

Without reinforcements, the body may “play” on uneven surfaces, which will lead to cracks at welding points.

❓ Which wheels are suitable for Version 3?

Minimum requirements:

  • 🔄 Front: 18x10J ET+10 (For example, Work Emotion CR Kiwami).
  • 🔄 Rear: 18x12J ET+20 (requires spacers 5–10 mm).
  • 🔄 Rubber: 235/40R18 front, 275/35R18 behind (for example, Toyo R888R for track or Falken FK510 for the street).

❓ Is it legal to participate in drift competitions with Rocket Bunny?

Yes, but only if:

  • 📋 The car passed technical inspection organizers (usually check the reliability of fastenings and the absence of sharp edges).
  • 📋 Wheel width does not exceed competition regulations (usually +70 mm from the drain).
  • 📋 Installed protective bars (For example, Nismo S-tune or Cusco 6-point).

In Russia, most drift series (for example, RDS or D1 Russia) admit Rocket Bunny, but may require removal of sharp parts of the splitter.