The Ultimate 7‑Speed Rear Derailleur & Tensioner System – Precision Shifting, Redefined

Product Overview
Forget clunky gear changes and rattling chains. This all‑in‑one derailleur and tensioner set brings race‑inspired engineering to your daily ride. Every part is CNC‑machined to exacting tolerances, with a fully enclosed top pulley that seals out grime and keeps your chain tracking true – even over cobblestones or steep climbs.

Key Features

• Fully enclosed top pulley with narrow‑wide tooth profile – grips every chain link like a vice, virtually eliminating drop risks on rough terrain.
• Advanced tensioner design – the lighter V5 version trims rotating mass for snappier response, while the V4 remains a rock‑solid workhorse.
• Ceramic spindle option (“C” version) – available in Black or White (while stocks last) – reduces friction, extends bearing life, and adds a subtle custom look.
• Dual narrow‑wide jockey wheels (top and bottom) maintain constant chain tension, delivering whisper‑quiet operation across all 7 gears.
• Bolt‑on simplicity – fits directly onto the standard hanger of most compact folding frames without any drilling or adapters.

Technical Specs

• Speed compatibility: 7‑speed cassettes
• Pulley teeth: Narrow‑wide profile (both upper and lower)
• Spindle shaft: Standard stainless steel, or optional ceramic (Black/White)
• Tensioner variants: V5 (lighter, sportier) / V4 (heavier‑duty)
• Weight: V5 version is notably lighter – you’ll feel the difference every time you fold and carry
• Warranty: 1‑year coverage against manufacturing defects on all parts

What’s in the Box

• 1× Rear derailleur (with fully enclosed top pulley)
• 1× Tensioner unit (your choice of V5 or V4)
• 1× Spindle shaft with bottom jockey wheel (narrow‑wide teeth)
• Complete set of mounting bolts and hardware – everything needed for a straightforward install

Snag this kit today – because every commute deserves a little magic. 🚲⚡