Lego® NINJAGO 71720 Fire Stone Mech

The Lego set Fire Stone Mech with the set number 71720 is part of the LEGO NINJAGO theme and is recommended for ages 9+. It was released in June 2020. It includes 5 minifigures. The model has 968 pieces, and we estimate it takes around 2 - 3 hours to build. 100 Brickfact users have this set in their collection.
The set weighs about 1.030 kg. The box measures 13.9 x 14.9 x 2.8 in (35.4 x 37.8 x 7.1 cm). The recommended retail price is £64.99.
The Part-Out-Value (POV) is the sum of the average prices paid on bricklink.com for all parts of this set. It is about £95.18.

Lego 71720 product data

Set Information

Set ID
71720
Theme
Pieces
968
Building Time
2 - 3 hours
Age Range
9+

Availability

Release
06/2020
Retiring Status
Retired (12/2021)

Price Information

RRP
£64.99
Insiders Points (for purchase at Lego)
520
Part Out Value
£95.18
i

Packaging

Weight
1.030 kg
Packaging dimensions
13.9 x 14.9 x 2.8 in
EAN (GTIN13)
5702016617054

Popularity with Brickfact users

users have this set
100
buyers in the last 12 months
11

100 Brickfact users have Fire Stone Mech in their collection. 11 users bought it in the last 12 months.

Based on anonymized Brickfact user collections; shown only for sets with at least 10 users. As of 2 November 2026.

Lego 71720 price trend

Average sale price on secondary marketplaces – not the new price at retailers.

Current market value
£69.28
Growth vs. RRP
+6.6 % £64.99
Range
£65.21 – £74.70
Average
£70.51

Loading price history…

Minifigures from 71720 Fire Stone Mech

The Fire Stone Mech set includes 5 different minifigures, 1 of which are unique to this set. The combined value of the minifigures is £16.32, which is ~25% of the RRP of this set.
x1
Thumbnail of minifigure njo603
Murt
NINJAGO
time-logo
2020
#njo603
£3.48
i
4 sets
x1
Thumbnail of minifigure njo604
Nya
NINJAGO
time-logo
2020
#njo604
£2.07
3 sets
x1
Thumbnail of minifigure njo605
Kai
NINJAGO
time-logo
2020
#njo605
£3.63
2 sets
x1
Thumbnail of minifigure njo606
Cole
NINJAGO
time-logo
2020
#njo606
£2.96
2 sets
x1
Thumbnail of minifigure njo609
Moe
NINJAGO
time-logo
2020
#njo609
£4.18
Unique

Official Set Description for LEGO 71720 Fire Stone Mech

This LEGO® NINJAGO® Fire Stone Mech (71720) with 5 minifigures is perfect for fans of ninja toys and building sets for kids. Youngsters will love putting together the fire ninja mech and figures to play out action-packed scenes from the NINJAGO TV series.

Amazing LEGO fun toys
This stunning and detailed LEGO mech set offers kids a world of possibilities so they can enjoy hours of engrossing action. They can place two ninjas in the cockpit of the highly posable mech as it storms into battle against enemies Murt and Moe, smashing its way out from the bowels of Shintaro Mountain.

The perfect building toys for kids
LEGO NINJAGO mech sets offer youngsters a gateway into a world of fantasy fun where they can indulge in creative play as they role-play stories with buildable figures. Your little ninja will be enthralled as they play with a range of action toys, including cars, jets, dragons and more.

  • Super-cool LEGO® NINJAGO® Fire Stone Mech (71720) and 5 minifigures for kids to recreate action from the NINJAGO TV series. This makes the perfect role-play toy for kids who want to pretend to be their ninja heroes.
  • This ninja playset includes a NINJAGO® Fire Stone mech and 5 minifigures: Hero Kai, Hero Nya, Hero Cole, Moe and Murt. Youngsters can have fun playing out their own NINJAGO brick adventures from the Dungeons of Shintaro.
  • This awesome toy provides kids with endless play possibilities. The Fire Stone ninja mech boasts highly posable legs and arms, fits up to 2 minifigures in its cockpit, and can fire studs from its shooters.
  • This 968-piece LEGO® NINJAGO® mech set provides a fun building experience for boys and girls aged 9+. New for June 2020, this action toy is the perfect way for little ninjas to explore their creativity.
  • This NINJAGO® building set for kids is perfect for play at home or for fun on the go. Ninjas can enjoy adventures anywhere! The fire ninja mech measure overs 10” (27cm) high, 7” (19cm) long and 11” (29cm) wide.
  • No batteries are required for this fun toy set – it is ready for breathtaking NINJAGO® action as soon as it is built. Kids need only the power of their imaginations.
  • A fun and rewarding building experience is on offer to young LEGO® fans when they assemble this LEGO NINJAGO® mech, accompanied all the way by easy-to-follow instructions.
  • LEGO® NINJAGO® building toys for kids fire up young, curious minds and allow themto escape into a unique world of fantasy action where they can join forces with their ninja heroes for awesome NINJAGO brick adventures.
  • The LEGO® building bricks in this NINJAGO® mech meet the highest industry standards, ensuring they are always consistent, compatible and pull apart easily every time.
  • The LEGO® building bricks used for this LEGO mech set meet the highest global safety and quality standards. You are always in safe hands when you choose LEGO playsets as a gift for your children.

Building Instruction for LEGO 71720 Fire Stone Mech

LEGO 71720 Frequently Asked Questions

Is LEGO 71720 still available?
LEGO has retired 71720 Fire Stone Mech, and no retailer in our price comparison currently sells it new. Its market value on secondary marketplaces is £69.28.
Disclaimer

Brickfact may earn a commission when you buy through a merchant link. Commissions do not determine the order of offers.

LEGO® is a trademark of the LEGO Group, but this website is not sponsored, authorized or endorsed by them.
As an Amazon partner, we earn money on qualified sales that you make through links to Amazon on our website. The price for you remains the same, but you support this project ❤️ .
© 2026 Brickfact. All Rights Reserved